945 lines
28 KiB
C
Executable File
945 lines
28 KiB
C
Executable File
/* KallistiGL for KallistiOS ##version##
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libgl/gl-arrays.c
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Copyright (C) 2013-2014 Josh Pearson
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Arrays Input Primitive Types Supported:
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-GL_TRIANGLES
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-GL_TRIANGLE_STRIPS
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-GL_QUADS
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Here, it is not necessary to enable or disable client states;
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the API is aware of what pointers have been submitted, and will
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render accordingly. If you submit a normal pointer, dynamic
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vertex lighting will be applied even if you submit a color
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pointer, so only submit one or the other.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "gl.h"
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#include "gl-api.h"
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#include "gl-arrays.h"
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#include "gl-rgb.h"
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#include "gl-sh4.h"
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//========================================================================================//
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//== Local Variables ==//
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#define GL_MAX_ARRAY_VERTICES 1024*32 /* Maximum Number of Vertices in the Array Buffer */
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static glVertex GL_ARRAY_BUF[GL_MAX_ARRAY_VERTICES];
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static GLfloat GL_ARRAY_BUFW[GL_MAX_ARRAY_VERTICES];
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static GLfloat GL_ARRAY_DSTW[GL_MAX_ARRAY_VERTICES];
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static glVertex *GL_ARRAY_BUF_PTR;
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static GLuint GL_VERTEX_PTR_MODE = 0;
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//========================================================================================//
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//== Local Function Definitions ==//
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static inline void _glKosArraysTransformNormals(GLfloat *normal, GLuint count);
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static inline void _glKosArraysTransformPositions(GLfloat *position, GLuint count);
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//========================================================================================//
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//== Open GL API Public Functions ==//
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/* Submit a Vertex Position Pointer */
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GLAPI void APIENTRY glVertexPointer(GLint size, GLenum type,
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GLsizei stride, const GLvoid *pointer) {
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if(size != 3) /* Expect 3D X,Y,Z vertex... could do 2d X,Y later */
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_glKosThrowError(GL_INVALID_VALUE, "glVertexPointer");
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if(type != GL_FLOAT) /* Expect Floating point vertices */
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_glKosThrowError(GL_INVALID_ENUM, "glVertexPointer");
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if(stride < 0)
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_glKosThrowError(GL_INVALID_VALUE, "glVertexPointer");
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if(_glKosGetError()) {
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_glKosPrintError();
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return;
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}
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(stride) ? (GL_VERTEX_STRIDE = stride / 4) : (GL_VERTEX_STRIDE = 3);
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GL_VERTEX_POINTER = (float *)pointer;
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GL_VERTEX_PTR_MODE |= GL_USE_ARRAY;
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}
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/* Submit a Vertex Normal Pointer */
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GLAPI void APIENTRY glNormalPointer(GLenum type, GLsizei stride, const GLvoid *pointer) {
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if(type != GL_FLOAT) /* Expect Floating point vertices */
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_glKosThrowError(GL_INVALID_ENUM, "glNormalPointer");
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if(stride < 0)
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_glKosThrowError(GL_INVALID_VALUE, "glNormalPointer");
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if(_glKosGetError()) {
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_glKosPrintError();
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return;
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}
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(stride) ? (GL_NORMAL_STRIDE = stride / 4) : (GL_NORMAL_STRIDE = 3);
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GL_NORMAL_POINTER = (float *)pointer;
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GL_VERTEX_PTR_MODE |= GL_USE_NORMAL;
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}
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/* Submit a Texture Coordinate Pointer */
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GLAPI void APIENTRY glTexCoordPointer(GLint size, GLenum type,
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GLsizei stride, const GLvoid *pointer) {
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if(size != 2) /* Expect u and v */
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_glKosThrowError(GL_INVALID_VALUE, "glTexCoordPointer");
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if(type != GL_FLOAT) /* Expect Floating point vertices */
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_glKosThrowError(GL_INVALID_ENUM, "glTexCoordPointer");
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if(stride < 0)
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_glKosThrowError(GL_INVALID_VALUE, "glTexCoordPointer");
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if(_glKosGetError()) {
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_glKosPrintError();
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return;
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}
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(stride) ? (GL_TEXCOORD_STRIDE = stride / 4) : (GL_TEXCOORD_STRIDE = 2);
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GL_TEXCOORD_POINTER = (float *)pointer;
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GL_VERTEX_PTR_MODE |= GL_USE_TEXTURE;
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}
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/* Submit a Color Pointer */
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GLAPI void APIENTRY glColorPointer(GLint size, GLenum type,
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GLsizei stride, const GLvoid *pointer) {
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if((type == GL_UNSIGNED_INT) && (size == 1)) {
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GL_COLOR_COMPONENTS = 1;
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GL_COLOR_POINTER = (GLvoid *)pointer;
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GL_COLOR_TYPE = type;
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}
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else if((type == GL_UNSIGNED_BYTE) && (size == 4)) {
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GL_COLOR_COMPONENTS = 4;
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GL_COLOR_POINTER = (GLvoid *)pointer;
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GL_COLOR_TYPE = type;
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}
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else if((type == GL_FLOAT) && (size == 3)) {
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GL_COLOR_COMPONENTS = 3;
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GL_COLOR_POINTER = (GLfloat *)pointer;
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GL_COLOR_TYPE = type;
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}
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else if((type == GL_FLOAT) && (size == 4)) {
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GL_COLOR_COMPONENTS = 4;
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GL_COLOR_POINTER = (GLfloat *)pointer;
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GL_COLOR_TYPE = type;
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}
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else {
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_glKosThrowError(GL_INVALID_ENUM, "glColorPointer");
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_glKosPrintError();
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return;
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}
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(stride) ? (GL_COLOR_STRIDE = stride / 4) : (GL_COLOR_STRIDE = size);
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GL_VERTEX_PTR_MODE |= GL_USE_COLOR;
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}
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//========================================================================================//
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//== Vertex Pointer Internal API ==//
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inline void _glKosArrayBufIncrement() {
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++GL_ARRAY_BUF_PTR;
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}
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inline void _glKosArrayBufReset() {
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GL_ARRAY_BUF_PTR = &GL_ARRAY_BUF[0];
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}
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inline glVertex *_glKosArrayBufAddr() {
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return &GL_ARRAY_BUF[0];
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}
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inline glVertex *_glKosArrayBufPtr() {
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return GL_ARRAY_BUF_PTR;
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}
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static inline void _glKosArraysTransformNormals(GLfloat *normal, GLuint count) {
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glVertex *v = &GL_ARRAY_BUF[0];
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GLfloat *N = normal;
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_glKosMatrixLoadModelRot();
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while(count--) {
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mat_trans_normal3_nomod(N[0], N[1], N[2], v->norm[0], v->norm[1], v->norm[2]);
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N += 3;
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++v;
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}
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}
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static inline void _glKosArraysTransformPositions(GLfloat *position, GLuint count) {
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glVertex *v = &GL_ARRAY_BUF[0];
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GLfloat *P = position;
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_glKosMatrixLoadModelView();
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while(count--) {
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mat_trans_single3_nodiv_nomod(P[0], P[1], P[2], v->pos[0], v->pos[1], v->pos[2]);
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P += 3;
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++v;
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}
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}
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//========================================================================================//
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//== Arrays Vertex Transform ==/
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static void _glKosArraysTransform(GLuint count) {
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GLfloat *src = GL_VERTEX_POINTER;
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pvr_vertex_t *dst = _glKosVertexBufPointer();
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register float __x __asm__("fr12");
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register float __y __asm__("fr13");
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register float __z __asm__("fr14");
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while(count--) {
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__x = src[0];
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__y = src[1];
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__z = src[2];
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mat_trans_fv12()
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dst->x = __x;
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dst->y = __y;
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dst->z = __z;
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++dst;
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src += GL_VERTEX_STRIDE;
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}
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}
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static void _glKosArraysTransformClip(GLuint count) {
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GLfloat *src = GL_VERTEX_POINTER;
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GLfloat *W = GL_ARRAY_DSTW;
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pvr_vertex_t *dst = _glKosClipBufAddress();
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register float __x __asm__("fr12");
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register float __y __asm__("fr13");
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register float __z __asm__("fr14");
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register float __w __asm__("fr15");
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while(count--) {
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__x = src[0];
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__y = src[1];
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__z = src[2];
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mat_trans_fv12_nodivw()
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dst->x = __x;
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dst->y = __y;
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dst->z = __z;
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*W++ = __w;
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++dst;
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src += GL_VERTEX_STRIDE;
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}
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}
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static void _glKosArraysTransformElements(GLuint count) {
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GLfloat *src = GL_VERTEX_POINTER;
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GLuint i = 0;
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register float __x __asm__("fr12");
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register float __y __asm__("fr13");
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register float __z __asm__("fr14");
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printf("Transform Elements()\n");
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for(i = 0; i < count; i++) {
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__x = src[0];
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__y = src[1];
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__z = src[2];
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mat_trans_fv12()
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GL_ARRAY_BUF[i].pos[0] = __x;
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GL_ARRAY_BUF[i].pos[1] = __y;
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GL_ARRAY_BUF[i].pos[2] = __z;
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src += GL_VERTEX_STRIDE;
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}
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}
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static void _glKosArraysTransformClipElements(GLuint count) {
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GLfloat *src = GL_VERTEX_POINTER;
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GLuint i;
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register float __x __asm__("fr12");
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register float __y __asm__("fr13");
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register float __z __asm__("fr14");
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register float __w __asm__("fr15");
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for(i = 0; i < count; i++) {
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__x = src[0];
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__y = src[1];
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__z = src[2];
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mat_trans_fv12_nodivw()
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GL_ARRAY_BUF[i].pos[0] = __x;
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GL_ARRAY_BUF[i].pos[1] = __y;
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GL_ARRAY_BUF[i].pos[2] = __z;
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GL_ARRAY_BUFW[i] = __w;
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src += GL_VERTEX_STRIDE;
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}
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}
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//========================================================================================//
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//== Element Attribute Functions ==//
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//== Color ==//
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static inline void _glKosElementColor0(pvr_vertex_t *dst, GLuint count) {
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GLuint i;
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for(i = 0; i < count; i++)
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dst[i].argb = 0xFFFFFFFF;
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}
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static inline void _glKosElementColor1uiU8(pvr_vertex_t *dst, GLuint count) {
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GLuint i;
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GLuint *src = (GLuint *)GL_COLOR_POINTER;
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for(i = 0; i < count; i++)
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dst[i].argb = src[GL_INDEX_POINTER_U8[i] * GL_COLOR_STRIDE];
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}
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static inline void _glKosElementColor1uiU16(pvr_vertex_t *dst, GLuint count) {
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GLuint i;
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GLuint *color = (GLuint *)GL_COLOR_POINTER;
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for(i = 0; i < count; i++)
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dst[i].argb = color[GL_INDEX_POINTER_U16[i] * GL_COLOR_STRIDE];
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}
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static inline void _glKosElementColor4ubU8(pvr_vertex_t *dst, GLuint count) {
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GLuint i, *color = (GLuint *)GL_COLOR_POINTER;
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for(i = 0; i < count; i++)
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dst[i].argb = RGBA32_2_ARGB32(color[GL_INDEX_POINTER_U8[i]] * GL_COLOR_STRIDE);
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}
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static inline void _glKosElementColor4ubU16(pvr_vertex_t *dst, GLuint count) {
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GLuint i, *color = (GLuint *)GL_COLOR_POINTER;
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for(i = 0; i < count; i++)
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dst[i].argb = RGBA32_2_ARGB32(color[GL_INDEX_POINTER_U16[i] * GL_COLOR_STRIDE]);
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}
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static inline void _glKosElementColor3fU8(pvr_vertex_t *dst, GLuint count) {
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GLuint i, index;
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GLrgb3f *color = (GLrgb3f *)GL_COLOR_POINTER;
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for(i = 0; i < count; i++) {
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index = GL_INDEX_POINTER_U8[i] * GL_COLOR_STRIDE;
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dst[i].argb = (0xFF000000 | ((GLubyte)color[index][0] * 0xFF) << 16
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| ((GLubyte)color[index][1] * 0xFF) << 8
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| ((GLubyte)color[index][2] * 0xFF));
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}
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}
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static inline void _glKosElementColor3fU16(pvr_vertex_t *dst, GLuint count) {
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GLuint i, index;
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GLrgb3f *color = (GLrgb3f *)GL_COLOR_POINTER;
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for(i = 0; i < count; i++) {
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index = GL_INDEX_POINTER_U16[i] * GL_COLOR_STRIDE;
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dst[i].argb = (0xFF000000 | ((GLubyte)color[index][0] * 0xFF) << 16
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| ((GLubyte)color[index][1] * 0xFF) << 8
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| ((GLubyte)color[index][2] * 0xFF));
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}
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}
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static inline void _glKosElementColor4fU8(pvr_vertex_t *dst, GLuint count) {
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GLuint i, index;
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GLrgba4f *color = (GLrgba4f *)GL_COLOR_POINTER;
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for(i = 0; i < count; i++) {
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index = GL_INDEX_POINTER_U8[i] * GL_COLOR_STRIDE;
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dst[i].argb = (((GLubyte)color[index][3] * 0xFF) << 24
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| ((GLubyte)color[index][0] * 0xFF) << 16
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| ((GLubyte)color[index][1] * 0xFF) << 8
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| ((GLubyte)color[index][2] * 0xFF));
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}
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}
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static inline void _glKosElementColor4fU16(pvr_vertex_t *dst, GLuint count) {
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GLuint i, index;
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GLrgba4f *color = (GLrgba4f *)GL_COLOR_POINTER;
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for(i = 0; i < count; i++) {
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index = GL_INDEX_POINTER_U16[i] * GL_COLOR_STRIDE;
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dst[i].argb = (((GLubyte)color[index][3] * 0xFF) << 24
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| ((GLubyte)color[index][0] * 0xFF) << 16
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| ((GLubyte)color[index][1] * 0xFF) << 8
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| ((GLubyte)color[index][2] * 0xFF));
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}
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}
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//== Texture Coordinates ==//
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static inline void _glKosElementTexCoord2fU16(pvr_vertex_t *dst, GLuint count) {
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GLuint i, index;
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GLfloat *t = GL_TEXCOORD_POINTER;
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for(i = 0; i < count; i++) {
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index = GL_INDEX_POINTER_U16[i] * GL_TEXCOORD_STRIDE;
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dst[i].u = t[index];
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dst[i].v = t[index + 1];
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}
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}
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static inline void _glKosElementTexCoord2fU8(pvr_vertex_t *dst, GLuint count) {
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GLuint i, index;
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GLfloat *t = GL_TEXCOORD_POINTER;
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for(i = 0; i < count; i++) {
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index = GL_INDEX_POINTER_U8[i] * GL_TEXCOORD_STRIDE;
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dst[i].u = t[index];
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dst[i].v = t[index + 1];
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}
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}
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//========================================================================================//
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//== Element Unpacking ==//
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static inline void _glKosArraysUnpackElementsS16(pvr_vertex_t *dst, GLuint count) {
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glVertex *vert = GL_ARRAY_BUF;
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GLuint i;
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for(i = 0; i < count; i++) {
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dst[i].x = vert[GL_INDEX_POINTER_U16[i]].pos[0];
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dst[i].y = vert[GL_INDEX_POINTER_U16[i]].pos[1];
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dst[i].z = vert[GL_INDEX_POINTER_U16[i]].pos[2];
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}
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}
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static inline void _glKosArraysUnpackElementsS8(pvr_vertex_t *dst, GLuint count) {
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glVertex *vert = GL_ARRAY_BUF;
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GLuint i;
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for(i = 0; i < count; i++) {
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dst[i].x = vert[GL_INDEX_POINTER_U8[i]].pos[0];
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dst[i].y = vert[GL_INDEX_POINTER_U8[i]].pos[1];
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dst[i].z = vert[GL_INDEX_POINTER_U8[i]].pos[2];
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}
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}
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static inline void _glKosArraysUnpackClipElementsS16(pvr_vertex_t *dst, GLuint count) {
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glVertex *vert = GL_ARRAY_BUF;
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GLuint i;
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for(i = 0; i < count; i++) {
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dst[i].x = vert[GL_INDEX_POINTER_U16[i]].pos[0];
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dst[i].y = vert[GL_INDEX_POINTER_U16[i]].pos[1];
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dst[i].z = vert[GL_INDEX_POINTER_U16[i]].pos[2];
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GL_ARRAY_DSTW[i] = GL_ARRAY_BUFW[GL_INDEX_POINTER_U16[i]];
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}
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}
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static inline void _glKosArraysUnpackClipElementsS8(pvr_vertex_t *dst, GLuint count) {
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glVertex *vert = GL_ARRAY_BUF;
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GLuint i;
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for(i = 0; i < count; i++) {
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dst[i].x = vert[GL_INDEX_POINTER_U8[i]].pos[0];
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dst[i].y = vert[GL_INDEX_POINTER_U8[i]].pos[1];
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dst[i].z = vert[GL_INDEX_POINTER_U8[i]].pos[2];
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GL_ARRAY_DSTW[i] = GL_ARRAY_BUFW[GL_INDEX_POINTER_U8[i]];
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}
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}
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//========================================================================================//
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//== Misc Utils ==//
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static inline void _glKosVertexSwizzle(pvr_vertex_t *v1, pvr_vertex_t *v2) {
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pvr_vertex_t tmp = *v1;
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*v1 = *v2;
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*v2 = * &tmp;
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}
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static inline void _glKosArraysResetState() {
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GL_VERTEX_PTR_MODE = 0;
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}
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//========================================================================================//
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//== Vertex Flag Settings for the PVR2DC hardware ==//
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static inline void _glKosArrayFlagsSetQuad(pvr_vertex_t *dst, GLuint count) {
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GLuint i;
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for(i = 0; i < count; i += 4) {
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_glKosVertexSwizzle(&dst[2], &dst[3]);
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dst[i + 0].flags = dst[i + 1].flags = dst[i + 2].flags = PVR_CMD_VERTEX;
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|
dst[i + 3].flags = PVR_CMD_VERTEX_EOL;
|
|
}
|
|
}
|
|
|
|
static inline void _glKosArrayFlagsSetTriangle(pvr_vertex_t *dst, GLuint count) {
|
|
GLuint i;
|
|
|
|
for(i = 0; i < count; i += 3) {
|
|
dst[i + 0].flags = dst[i + 1].flags = PVR_CMD_VERTEX;
|
|
dst[i + 2].flags = PVR_CMD_VERTEX_EOL;
|
|
}
|
|
}
|
|
|
|
static inline void _glKosArrayFlagsSetTriangleStrip(pvr_vertex_t *dst, GLuint count) {
|
|
GLuint i;
|
|
|
|
for(i = 0; i < count - 1; i++)
|
|
dst[i].flags = PVR_CMD_VERTEX;
|
|
|
|
dst[i].flags = PVR_CMD_VERTEX_EOL;
|
|
}
|
|
|
|
//========================================================================================//
|
|
//== OpenGL Error Code Genration ==//
|
|
|
|
static GLuint _glKosArraysVerifyParameter(GLenum mode, GLsizei count, GLenum type, GLubyte element) {
|
|
GLuint GL_ERROR_CODE = 0;
|
|
|
|
if(mode != GL_QUADS)
|
|
if(mode != GL_TRIANGLES)
|
|
if(mode != GL_TRIANGLE_STRIP)
|
|
GL_ERROR_CODE |= GL_INVALID_ENUM;
|
|
|
|
if(count < 0)
|
|
GL_ERROR_CODE |= GL_INVALID_VALUE;
|
|
|
|
if(!(GL_VERTEX_PTR_MODE & GL_USE_ARRAY))
|
|
GL_ERROR_CODE |= GL_INVALID_OPERATION;
|
|
|
|
if(count > GL_MAX_ARRAY_VERTICES)
|
|
GL_ERROR_CODE |= GL_OUT_OF_MEMORY;
|
|
|
|
if(element) {
|
|
switch(type) {
|
|
case GL_UNSIGNED_BYTE:
|
|
case GL_UNSIGNED_SHORT:
|
|
break;
|
|
|
|
default:
|
|
GL_ERROR_CODE |= GL_INVALID_ENUM;
|
|
}
|
|
}
|
|
else if(type > count)
|
|
GL_ERROR_CODE |= GL_INVALID_VALUE;
|
|
|
|
return GL_ERROR_CODE;
|
|
}
|
|
|
|
void _glKosPrintErrorString(GLuint error) {
|
|
if(error) {
|
|
printf("GL_ERROR_CODE GENERATED:\n");
|
|
|
|
if(error & GL_INVALID_ENUM)
|
|
printf("\tGL_INVALID_ENUM\n");
|
|
|
|
if(error & GL_INVALID_VALUE)
|
|
printf("\tGL_INVALID_VALUE\n");
|
|
|
|
if(error & GL_INVALID_OPERATION)
|
|
printf("\tGL_INVALID__OPERATION\n");
|
|
|
|
if(error & GL_OUT_OF_MEMORY)
|
|
printf("\tGL_OUT_OF_MEMORY\n");
|
|
}
|
|
}
|
|
|
|
//========================================================================================//
|
|
//== OpenGL Elemental Array Submission ==//
|
|
|
|
GLAPI void APIENTRY glDrawElements(GLenum mode, GLsizei count, GLenum type, const GLvoid *indices) {
|
|
/* Before we process the vertex data, ensure all parameters are valid */
|
|
GLuint error = _glKosArraysVerifyParameter(mode, count, type, 1);
|
|
|
|
if(error) {
|
|
_glKosPrintErrorString(error);
|
|
|
|
_glKosArraysResetState();
|
|
|
|
return;
|
|
}
|
|
|
|
switch(type) {
|
|
case GL_UNSIGNED_BYTE:
|
|
GL_INDEX_POINTER_U8 = (GLubyte *)indices;
|
|
break;
|
|
|
|
case GL_UNSIGNED_SHORT:
|
|
GL_INDEX_POINTER_U16 = (GLushort *)indices;
|
|
break;
|
|
}
|
|
|
|
/* Compile the PVR polygon context with the currently enabled flags */
|
|
if((GL_VERTEX_PTR_MODE & GL_USE_TEXTURE) && _glKosBoundTexID() > 0)
|
|
_glKosCompileHdrTx();
|
|
else
|
|
_glKosCompileHdr();
|
|
|
|
pvr_vertex_t *dst; /* Destination of Output Vertex Array */
|
|
|
|
if(_glKosEnabledNearZClip())
|
|
dst = _glKosClipBufAddress();
|
|
else
|
|
dst = _glKosVertexBufPointer();
|
|
|
|
/* Check if Vertex Lighting is enabled. Else, check for Color Submission */
|
|
if((GL_VERTEX_PTR_MODE & GL_USE_NORMAL) && _glKosEnabledLighting()) {
|
|
_glKosArraysTransformNormals(GL_NORMAL_POINTER, count);
|
|
_glKosArraysTransformPositions(GL_VERTEX_POINTER, count);
|
|
_glKosVertexLights(GL_ARRAY_BUF, dst, count);
|
|
}
|
|
else if(GL_VERTEX_PTR_MODE & GL_USE_COLOR) {
|
|
switch(GL_COLOR_TYPE) {
|
|
case GL_FLOAT:
|
|
switch(GL_COLOR_COMPONENTS) {
|
|
case 3:
|
|
switch(type) {
|
|
case GL_UNSIGNED_BYTE:
|
|
_glKosElementColor3fU8(dst, count);
|
|
break;
|
|
|
|
case GL_UNSIGNED_SHORT:
|
|
_glKosElementColor3fU16(dst, count);
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case 4:
|
|
switch(type) {
|
|
case GL_UNSIGNED_BYTE:
|
|
_glKosElementColor4fU8(dst, count);
|
|
break;
|
|
|
|
case GL_UNSIGNED_SHORT:
|
|
_glKosElementColor4fU16(dst, count);
|
|
break;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case GL_UNSIGNED_INT:
|
|
if(GL_COLOR_COMPONENTS == 1)
|
|
switch(type) {
|
|
case GL_UNSIGNED_BYTE:
|
|
_glKosElementColor1uiU8(dst, count);
|
|
break;
|
|
|
|
case GL_UNSIGNED_SHORT:
|
|
_glKosElementColor1uiU16(dst, count);
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case GL_UNSIGNED_BYTE:
|
|
if(GL_COLOR_COMPONENTS == 4)
|
|
switch(type) {
|
|
case GL_UNSIGNED_BYTE:
|
|
_glKosElementColor4ubU8(dst, count);
|
|
break;
|
|
|
|
case GL_UNSIGNED_SHORT:
|
|
_glKosElementColor4ubU16(dst, count);
|
|
break;
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
_glKosElementColor0(dst, count); /* No colors bound, color white */
|
|
|
|
/* Check if Texture Coordinates are enabled */
|
|
if((GL_VERTEX_PTR_MODE & GL_USE_TEXTURE) && (_glKosEnabledTexture2D() >= 0))
|
|
switch(type) {
|
|
case GL_UNSIGNED_BYTE:
|
|
_glKosElementTexCoord2fU8(dst, count);
|
|
break;
|
|
|
|
case GL_UNSIGNED_SHORT:
|
|
_glKosElementTexCoord2fU16(dst, count);
|
|
break;
|
|
}
|
|
|
|
_glKosMatrixApplyRender(); /* Apply the Render Matrix Stack */
|
|
|
|
if(!(_glKosEnabledNearZClip())) {/* Transform the element vertices */
|
|
/* Transform vertices with perspective divde */
|
|
_glKosArraysTransformElements(count);
|
|
|
|
/* Unpack the indexed positions into primitives for rasterization */
|
|
switch(type) {
|
|
case GL_UNSIGNED_BYTE:
|
|
_glKosArraysUnpackElementsS8(dst, count);
|
|
break;
|
|
|
|
case GL_UNSIGNED_SHORT:
|
|
_glKosArraysUnpackElementsS16(dst, count);
|
|
break;
|
|
}
|
|
|
|
/* Set the vertex flags for use with the PVR */
|
|
switch(mode) {
|
|
case GL_QUADS:
|
|
_glKosArrayFlagsSetQuad(dst, count);
|
|
break;
|
|
|
|
case GL_TRIANGLES:
|
|
_glKosArrayFlagsSetTriangle(dst, count);
|
|
break;
|
|
|
|
case GL_TRIANGLE_STRIP:
|
|
_glKosArrayFlagsSetTriangleStrip(dst, count);
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
/* Transform vertices with no perspective divde, store w component */
|
|
_glKosArraysTransformClipElements(count);
|
|
|
|
/* Unpack the indexed positions into primitives for rasterization */
|
|
switch(type) {
|
|
case GL_UNSIGNED_BYTE:
|
|
_glKosArraysUnpackClipElementsS8(dst, count);
|
|
break;
|
|
|
|
case GL_UNSIGNED_SHORT:
|
|
_glKosArraysUnpackClipElementsS16(dst, count);
|
|
break;
|
|
}
|
|
|
|
/* Finally, clip the input vertex data into the output vertex buffer */
|
|
switch(mode) {
|
|
case GL_TRIANGLES:
|
|
count = _glKosClipTrianglesTransformed(dst, GL_ARRAY_DSTW,
|
|
(pvr_vertex_t *)_glKosVertexBufPointer(), count);
|
|
break;
|
|
|
|
case GL_QUADS:
|
|
count = _glKosClipQuadsTransformed(dst, GL_ARRAY_DSTW,
|
|
(pvr_vertex_t *)_glKosVertexBufPointer(), count);
|
|
|
|
break;
|
|
|
|
case GL_TRIANGLE_STRIP:
|
|
count = _glKosClipTriangleStripTransformed(dst, GL_ARRAY_DSTW,
|
|
(pvr_vertex_t *)_glKosVertexBufPointer(), count);
|
|
break;
|
|
}
|
|
}
|
|
|
|
_glKosVertexBufAdd(count);
|
|
|
|
_glKosArraysResetState();
|
|
}
|
|
|
|
|
|
|
|
//========================================================================================//
|
|
//== Array Attribute Functions ==//
|
|
|
|
//== Color ==//
|
|
|
|
static inline void _glKosArrayColor0(pvr_vertex_t *dst, GLuint count) {
|
|
GLuint i;
|
|
|
|
for(i = 0; i < count; i++)
|
|
dst[i].argb = 0xFFFFFFFF;
|
|
}
|
|
|
|
static inline void _glKosArrayColor1ui(pvr_vertex_t *dst, GLuint count) {
|
|
GLuint i;
|
|
GLuint *color = (GLuint *)GL_COLOR_POINTER;
|
|
|
|
for(i = 0; i < count; i++) {
|
|
dst[i].argb = *color;
|
|
color += GL_COLOR_STRIDE;
|
|
}
|
|
}
|
|
|
|
static inline void _glKosArrayColor4ub(pvr_vertex_t *dst, GLuint count) {
|
|
GLuint i, *color = (GLuint *)GL_COLOR_POINTER;
|
|
|
|
for(i = 0; i < count; i++) {
|
|
dst[i].argb = RGBA32_2_ARGB32(*color);
|
|
color += GL_COLOR_STRIDE;
|
|
}
|
|
}
|
|
|
|
static inline void _glKosArrayColor3f(pvr_vertex_t *dst, GLuint count) {
|
|
GLuint i;
|
|
GLfloat *color = (GLfloat *)GL_COLOR_POINTER;
|
|
|
|
for(i = 0; i < count; i++) {
|
|
dst[i].argb = (0xFF000000 | ((GLubyte)(color[0] * 0xFF)) << 16
|
|
| ((GLubyte)(color[1] * 0xFF)) << 8
|
|
| ((GLubyte)(color[2] * 0xFF)));
|
|
color += GL_COLOR_STRIDE;
|
|
}
|
|
}
|
|
|
|
static inline void _glKosArrayColor4f(pvr_vertex_t *dst, GLuint count) {
|
|
GLuint i;
|
|
GLfloat *color = (GLfloat *)GL_COLOR_POINTER;
|
|
|
|
for(i = 0; i < count; i++) {
|
|
dst[i].argb = (((GLubyte)(color[3] * 0xFF)) << 24
|
|
| ((GLubyte)(color[0] * 0xFF)) << 16
|
|
| ((GLubyte)(color[1] * 0xFF)) << 8
|
|
| ((GLubyte)(color[2] * 0xFF)));
|
|
color += GL_COLOR_STRIDE;
|
|
}
|
|
}
|
|
|
|
//== Texture Coordinates ==//
|
|
|
|
static inline void _glKosArrayTexCoord2f(pvr_vertex_t *dst, GLuint count) {
|
|
GLuint i;
|
|
GLfloat *uv = GL_TEXCOORD_POINTER;
|
|
|
|
for(i = 0; i < count; i++) {
|
|
dst[i].u = uv[0];
|
|
dst[i].v = uv[1];
|
|
uv += GL_TEXCOORD_STRIDE;
|
|
}
|
|
}
|
|
|
|
//========================================================================================//
|
|
//== Open GL Draw Arrays ==//
|
|
|
|
GLAPI void APIENTRY glDrawArrays(GLenum mode, GLint first, GLsizei count) {
|
|
/* Before we process the vertex data, ensure all parameters are valid */
|
|
GLuint error = _glKosArraysVerifyParameter(mode, count, first, 0);
|
|
|
|
if(error) {
|
|
_glKosPrintErrorString(error);
|
|
|
|
return _glKosArraysResetState();
|
|
}
|
|
|
|
GL_VERTEX_POINTER += first; /* Add Pointer Offset */
|
|
GL_TEXCOORD_POINTER += first;
|
|
GL_COLOR_POINTER += first;
|
|
GL_NORMAL_POINTER += first;
|
|
|
|
/* Compile the PVR polygon context with the currently enabled flags */
|
|
if((GL_VERTEX_PTR_MODE & GL_USE_TEXTURE) && _glKosBoundTexID() > 0)
|
|
_glKosCompileHdrTx();
|
|
else
|
|
_glKosCompileHdr();
|
|
|
|
pvr_vertex_t *dst; /* Destination of Output Vertex Array */
|
|
|
|
if(_glKosEnabledNearZClip())
|
|
dst = _glKosClipBufAddress();
|
|
else
|
|
dst = _glKosVertexBufPointer();
|
|
|
|
/* Check if Vertex Lighting is enabled. Else, check for Color Submission */
|
|
if((GL_VERTEX_PTR_MODE & GL_USE_NORMAL) && _glKosEnabledLighting()) {
|
|
_glKosArraysTransformNormals(GL_NORMAL_POINTER, count);
|
|
_glKosArraysTransformPositions(GL_VERTEX_POINTER, count);
|
|
_glKosVertexLights(GL_ARRAY_BUF, dst, count);
|
|
}
|
|
else if(GL_VERTEX_PTR_MODE & GL_USE_COLOR) {
|
|
switch(GL_COLOR_TYPE) {
|
|
case GL_FLOAT:
|
|
switch(GL_COLOR_COMPONENTS) {
|
|
case 3:
|
|
_glKosArrayColor3f(dst, count);
|
|
break;
|
|
|
|
case 4:
|
|
_glKosArrayColor4f(dst, count);
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case GL_UNSIGNED_INT:
|
|
if(GL_COLOR_COMPONENTS == 1)
|
|
_glKosArrayColor1ui(dst, count);
|
|
|
|
break;
|
|
|
|
case GL_UNSIGNED_BYTE:
|
|
if(GL_COLOR_COMPONENTS == 4)
|
|
_glKosArrayColor4ub(dst, count);
|
|
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
_glKosArrayColor0(dst, count); /* No colors bound, color white */
|
|
|
|
/* Check if Texture Coordinates are enabled */
|
|
if((GL_VERTEX_PTR_MODE & GL_USE_TEXTURE) && (_glKosEnabledTexture2D() >= 0))
|
|
_glKosArrayTexCoord2f(dst, count);
|
|
|
|
_glKosMatrixApplyRender(); /* Apply the Render Matrix Stack */
|
|
|
|
if(!_glKosEnabledNearZClip()) {
|
|
/* Transform Vertex Positions */
|
|
_glKosArraysTransform(count);
|
|
|
|
/* Set the vertex flags for use with the PVR */
|
|
switch(mode) {
|
|
case GL_QUADS:
|
|
_glKosArrayFlagsSetQuad(dst, count);
|
|
break;
|
|
|
|
case GL_TRIANGLES:
|
|
_glKosArrayFlagsSetTriangle(dst, count);
|
|
break;
|
|
|
|
case GL_TRIANGLE_STRIP:
|
|
_glKosArrayFlagsSetTriangleStrip(dst, count);
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
/* Transform vertices with no perspective divide, store w component */
|
|
_glKosArraysTransformClip(count);
|
|
|
|
/* Finally, clip the input vertex data into the output vertex buffer */
|
|
switch(mode) {
|
|
case GL_TRIANGLES:
|
|
count = _glKosClipTrianglesTransformed(dst, GL_ARRAY_DSTW,
|
|
(pvr_vertex_t *)_glKosVertexBufPointer(), count);
|
|
break;
|
|
|
|
case GL_QUADS:
|
|
count = _glKosClipQuadsTransformed(dst, GL_ARRAY_DSTW,
|
|
(pvr_vertex_t *)_glKosVertexBufPointer(), count);
|
|
|
|
break;
|
|
|
|
case GL_TRIANGLE_STRIP:
|
|
count = _glKosClipTriangleStripTransformed(dst, GL_ARRAY_DSTW,
|
|
(pvr_vertex_t *)_glKosVertexBufPointer(), count);
|
|
break;
|
|
}
|
|
}
|
|
|
|
_glKosVertexBufAdd(count);
|
|
|
|
_glKosArraysResetState();
|
|
} |