ae335eeff1
This should be much faster as matrix loading is now minimized. Also splits transform from perspective divisionn to lay the groundwork for near-z clipping. This also fixes GL_POLYGON submission. Lighting can be made faster, this doesn't change the lighting algorithm, but the matrix changes should speed things up.
593 lines
17 KiB
C
593 lines
17 KiB
C
#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <stdlib.h>
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#include "../include/gl.h"
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#include "../include/glext.h"
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#include "private.h"
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typedef struct {
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const void* ptr;
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GLenum type;
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GLsizei stride;
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GLint size;
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} AttribPointer;
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static AttribPointer VERTEX_POINTER;
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static AttribPointer UV_POINTER;
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static AttribPointer ST_POINTER;
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static AttribPointer NORMAL_POINTER;
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static AttribPointer DIFFUSE_POINTER;
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#define VERTEX_ENABLED_FLAG (1 << 0)
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#define UV_ENABLED_FLAG (1 << 1)
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#define ST_ENABLED_FLAG (1 << 2)
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#define DIFFUSE_ENABLED_FLAG (1 << 3)
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#define NORMAL_ENABLED_FLAG (1 << 4)
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static GLuint ENABLED_VERTEX_ATTRIBUTES = 0;
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static GLubyte ACTIVE_CLIENT_TEXTURE = 0;
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void initAttributePointers() {
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TRACE();
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VERTEX_POINTER.ptr = NULL;
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VERTEX_POINTER.stride = 0;
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VERTEX_POINTER.type = GL_FLOAT;
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VERTEX_POINTER.size = 4;
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DIFFUSE_POINTER.ptr = NULL;
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DIFFUSE_POINTER.stride = 0;
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DIFFUSE_POINTER.type = GL_FLOAT;
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DIFFUSE_POINTER.size = 4;
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UV_POINTER.ptr = NULL;
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UV_POINTER.stride = 0;
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UV_POINTER.type = GL_FLOAT;
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UV_POINTER.size = 4;
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ST_POINTER.ptr = NULL;
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ST_POINTER.stride = 0;
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ST_POINTER.type = GL_FLOAT;
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ST_POINTER.size = 4;
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NORMAL_POINTER.ptr = NULL;
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NORMAL_POINTER.stride = 0;
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NORMAL_POINTER.type = GL_FLOAT;
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NORMAL_POINTER.size = 3;
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}
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static GLuint byte_size(GLenum type) {
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switch(type) {
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case GL_BYTE: return sizeof(GLbyte);
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case GL_UNSIGNED_BYTE: return sizeof(GLubyte);
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case GL_SHORT: return sizeof(GLshort);
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case GL_UNSIGNED_SHORT: return sizeof(GLushort);
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case GL_INT: return sizeof(GLint);
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case GL_UNSIGNED_INT: return sizeof(GLuint);
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case GL_DOUBLE: return sizeof(GLdouble);
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case GL_FLOAT:
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default: return sizeof(GLfloat);
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}
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}
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static void _parseColour(uint32* out, const GLubyte* in, GLint size, GLenum type) {
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switch(type) {
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case GL_BYTE: {
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case GL_UNSIGNED_BYTE:
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*out = in[3] << 24 | in[0] << 16 | in[1] << 8 | in[0];
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} break;
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case GL_SHORT:
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case GL_UNSIGNED_SHORT:
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/* FIXME!!!! */
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break;
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case GL_INT:
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case GL_UNSIGNED_INT:
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/* FIXME!!!! */
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break;
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case GL_FLOAT:
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case GL_DOUBLE:
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default: {
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const GLfloat* src = (GLfloat*) in;
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*out = PVR_PACK_COLOR(src[3], src[0], src[1], src[2]);
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} break;
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}
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}
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static void _parseFloats(GLfloat* out, const GLubyte* in, GLint size, GLenum type) {
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GLubyte i;
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switch(type) {
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case GL_SHORT: {
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GLshort* inp = (GLshort*) in;
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for(i = 0; i < size; ++i) {
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out[i] = (GLfloat) inp[i];
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}
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} break;
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case GL_INT: {
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GLint* inp = (GLint*) in;
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for(i = 0; i < size; ++i) {
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out[i] = (GLfloat) inp[i];
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}
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} break;
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case GL_FLOAT:
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case GL_DOUBLE: /* Double == Float */
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default: {
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const GLfloat* ptr = (const GLfloat*) in;
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for(i = 0; i < size; ++i) out[i] = ptr[i];
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}
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}
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}
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static void _parseIndex(GLshort* out, const GLubyte* in, GLenum type) {
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switch(type) {
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case GL_UNSIGNED_BYTE:
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*out = (GLshort) *in;
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break;
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case GL_UNSIGNED_SHORT:
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default:
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*out = *((GLshort*) in);
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}
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}
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/* There was a bug in this macro that shipped with Kos
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* which has now been fixed. But just in case...
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*/
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#undef mat_trans_single3_nodiv
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#define mat_trans_single3_nodiv(x, y, z) { \
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register float __x __asm__("fr12") = (x); \
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register float __y __asm__("fr13") = (y); \
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register float __z __asm__("fr14") = (z); \
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__asm__ __volatile__( \
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"fldi1 fr15\n" \
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"ftrv xmtrx, fv12\n" \
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: "=f" (__x), "=f" (__y), "=f" (__z) \
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: "0" (__x), "1" (__y), "2" (__z) \
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: "fr15"); \
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x = __x; y = __y; z = __z; \
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}
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#undef mat_trans_normal3
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#define mat_trans_normal3(x, y, z) { \
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register float __x __asm__("fr8") = (x); \
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register float __y __asm__("fr9") = (y); \
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register float __z __asm__("fr10") = (z); \
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__asm__ __volatile__( \
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"fldi0 fr11\n" \
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"ftrv xmtrx, fv8\n" \
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: "=f" (__x), "=f" (__y), "=f" (__z) \
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: "0" (__x), "1" (__y), "2" (__z) \
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: "fr11"); \
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x = __x; y = __y; z = __z; \
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}
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inline void transformToEyeSpace(GLfloat* point) {
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_matrixLoadModelView();
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mat_trans_single3_nodiv(point[0], point[1], point[2]);
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}
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inline void transformNormalToEyeSpace(GLfloat* normal) {
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_matrixLoadNormal();
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mat_trans_normal3(normal[0], normal[1], normal[2]);
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}
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typedef struct {
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uint8_t a;
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uint8_t r;
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uint8_t g;
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uint8_t b;
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} Colour;
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/* Note: This structure is the almost the same format as pvr_vertex_t aside from the offet
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* (oargb) which is replaced by the floating point w value. This is so that we can
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* simply zero it and memcpy the lot into the output */
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typedef struct {
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uint32_t flags;
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float xyz[3];
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float uv[2];
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Colour argb;
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float nxyz[3];
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float w;
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float xyzES[3]; /* Coordinate in eye space */
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float nES[3]; /* Normal in eye space */
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} ClipVertex;
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static void swapVertex(ClipVertex* v1, ClipVertex* v2) {
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ClipVertex tmp = *v1;
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*v1 = *v2;
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*v2 = tmp;
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}
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static void generate(AlignedVector* output, const GLenum mode, const GLsizei first, const GLsizei count,
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const GLubyte* indices, const GLenum type,
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const GLubyte* vptr, const GLubyte vstride, const GLubyte* cptr, const GLubyte cstride,
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const GLubyte* uvptr, const GLubyte uvstride, const GLubyte* nptr, const GLubyte nstride) {
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/* Read from the client buffers and generate an array of ClipVertices */
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GLsizei max = first + count;
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GLsizei spaceNeeded = (mode == GL_POLYGON || mode == GL_TRIANGLE_FAN) ? ((count - 2) * 3) : count;
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/* Make sure we have room for the output */
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aligned_vector_resize(output, spaceNeeded);
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ClipVertex* vertex = (ClipVertex*) output->data;
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GLsizei j;
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GLsizei i = 0;
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for(j = first; j < max; ++i, ++j, ++vertex) {
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vertex->flags = PVR_CMD_VERTEX;
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GLshort idx = j;
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if(indices) {
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_parseIndex(&idx, &indices[byte_size(type) * j], type);
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}
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_parseFloats(vertex->xyz, vptr + (idx * vstride), VERTEX_POINTER.size, VERTEX_POINTER.type);
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if(ENABLED_VERTEX_ATTRIBUTES & DIFFUSE_ENABLED_FLAG) {
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_parseColour((uint32_t*) &vertex->argb, cptr + (idx * cstride), DIFFUSE_POINTER.size, DIFFUSE_POINTER.type);
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} else {
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/* Default to white if colours are disabled */
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vertex->argb.a = 255;
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vertex->argb.r = 255;
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vertex->argb.g = 255;
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vertex->argb.b = 255;
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}
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if(ENABLED_VERTEX_ATTRIBUTES & UV_ENABLED_FLAG) {
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_parseFloats(vertex->uv, uvptr + (idx * uvstride), UV_POINTER.size, UV_POINTER.type);
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}
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if(ENABLED_VERTEX_ATTRIBUTES & NORMAL_ENABLED_FLAG) {
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_parseFloats(vertex->nxyz, nptr + (idx * nstride), NORMAL_POINTER.size, NORMAL_POINTER.type);
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} else {
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vertex->nxyz[0] = 0.0f;
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vertex->nxyz[1] = 0.0f;
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vertex->nxyz[2] = -1.0f;
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}
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if((mode == GL_TRIANGLES) && ((i + 1) % 3) == 0) {
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vertex->flags = PVR_CMD_VERTEX_EOL;
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} else if((mode == GL_QUADS) && ((i + 1) % 4) == 0) {
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ClipVertex* previous = vertex - 1;
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previous->flags = PVR_CMD_VERTEX_EOL;
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swapVertex(previous, vertex);
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} else if((mode == GL_POLYGON || mode == GL_TRIANGLE_FAN)) {
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ClipVertex* previous = vertex - 1;
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if(i == 2) {
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swapVertex(previous, vertex);
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vertex->flags = PVR_CMD_VERTEX_EOL;
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} else if(i > 2) {
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ClipVertex* first = (ClipVertex*) output->data;
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ClipVertex* previous = vertex - 1;
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ClipVertex* next = vertex + 1;
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*next = *first;
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swapVertex(next, vertex);
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vertex = next + 1;
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*vertex = *previous;
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vertex->flags = PVR_CMD_VERTEX_EOL;
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}
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}
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}
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/* If the mode was triangle strip, then the last vertex is the last vertex */
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if(mode == GL_TRIANGLE_STRIP) {
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vertex->flags = PVR_CMD_VERTEX_EOL;
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}
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}
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static void transform(AlignedVector* vertices) {
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/* Perform modelview transform, storing W */
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ClipVertex* vertex = (ClipVertex*) vertices->data;
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_applyRenderMatrix(); /* Apply the Render Matrix Stack */
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GLsizei i;
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for(i = 0; i < vertices->size; ++i, ++vertex) {
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register float __x __asm__("fr12") = (vertex->xyz[0]);
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register float __y __asm__("fr13") = (vertex->xyz[1]);
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register float __z __asm__("fr14") = (vertex->xyz[2]);
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register float __w __asm__("fr15") = 1.0f;
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__asm__ __volatile__(
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"ftrv xmtrx,fv12\n"
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: "=f" (__x), "=f" (__y), "=f" (__z), "=f" (__w)
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: "0" (__x), "1" (__y), "2" (__z), "3" (__w)
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);
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vertex->xyz[0] = __x;
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vertex->xyz[1] = __y;
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vertex->xyz[2] = __z;
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vertex->w = __w;
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}
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}
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static void clip(AlignedVector* vertices) {
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/* Perform clipping, generating new vertices as necessary */
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}
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static void mat_transform3(const float* xyz, const float* xyzOut, const uint32_t count, const uint32_t stride) {
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uint8_t* dataIn = (uint8_t*) xyz;
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uint8_t* dataOut = (uint8_t*) xyzOut;
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uint32_t i = count;
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while(i--) {
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float* in = (float*) dataIn;
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float* out = (float*) dataOut;
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mat_trans_single3_nodiv_nomod(in[0], in[1], in[2], out[0], out[1], out[2]);
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dataIn += stride;
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dataOut += stride;
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}
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}
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static void mat_transform_normal3(const float* xyz, const float* xyzOut, const uint32_t count, const uint32_t stride) {
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uint8_t* dataIn = (uint8_t*) xyz;
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uint8_t* dataOut = (uint8_t*) xyzOut;
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uint32_t i = count;
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while(i--) {
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float* in = (float*) dataIn;
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float* out = (float*) dataOut;
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mat_trans_normal3_nomod(in[0], in[1], in[2], out[0], out[1], out[2]);
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dataIn += stride;
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dataOut += stride;
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}
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}
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static void light(AlignedVector* vertices) {
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if(!isLightingEnabled()) {
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return;
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}
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/* Perform lighting calculations and manipulate the colour */
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ClipVertex* vertex = (ClipVertex*) vertices->data;
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_matrixLoadModelView();
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mat_transform3(vertex->xyz, vertex->xyzES, vertices->size, sizeof(ClipVertex));
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_matrixLoadNormal();
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mat_transform_normal3(vertex->nxyz, vertex->nES, vertices->size, sizeof(ClipVertex));
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GLsizei i;
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for(i = 0; i < vertices->size; ++i, ++vertex) {
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/* We ignore diffuse colour when lighting is enabled. If GL_COLOR_MATERIAL is enabled
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* then the lighting calculation should possibly take it into account */
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GLfloat contribution [] = {0.0f, 0.0f, 0.0f, 0.0f};
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GLfloat to_add [] = {0.0f, 0.0f, 0.0f, 0.0f};
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GLubyte j;
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for(j = 0; j < MAX_LIGHTS; ++j) {
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if(isLightEnabled(j)) {
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calculateLightingContribution(j, vertex->xyzES, vertex->nES, to_add);
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contribution[0] += to_add[0];
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contribution[1] += to_add[1];
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contribution[2] += to_add[2];
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contribution[3] += to_add[3];
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}
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}
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uint32_t final = PVR_PACK_COLOR(contribution[3], contribution[0], contribution[1], contribution[2]);
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vertex->argb = *((Colour*) &final);
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}
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}
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static void divide(AlignedVector* vertices) {
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/* Perform perspective divide on each vertex */
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ClipVertex* vertex = (ClipVertex*) vertices->data;
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GLsizei i;
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for(i = 0; i < vertices->size; ++i, ++vertex) {
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vertex->xyz[2] = 1.0f / vertex->w;
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vertex->xyz[0] *= vertex->xyz[2];
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vertex->xyz[1] *= vertex->xyz[2];
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}
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}
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static void push(const AlignedVector* vertices, PolyList* activePolyList) {
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/* Copy the vertices to the active poly list */
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// Make room for the element + the header
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PVRCommand* dst = (PVRCommand*) aligned_vector_extend(&activePolyList->vector, vertices->size + 1);
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// Store a pointer to the header
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pvr_poly_hdr_t* hdr = (pvr_poly_hdr_t*) dst;
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// Point dest at the first new vertex to populate
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dst++;
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// Compile
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pvr_poly_cxt_t cxt = *getPVRContext();
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cxt.list_type = activePolyList->list_type;
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updatePVRTextureContext(&cxt, getTexture0());
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pvr_poly_compile(hdr, &cxt);
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GLsizei i;
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for(i = 0; i < vertices->size; ++i, dst++) {
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pvr_vertex_t* vout = (pvr_vertex_t*) dst;
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/* The first part of ClipVertex is the same as the first part of pvr_vertex_t */
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memcpy(vout, aligned_vector_at(vertices, i), sizeof(pvr_vertex_t));
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/* Except for this bit */
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vout->oargb = 0;
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}
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}
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static void submitVertices(GLenum mode, GLsizei first, GLsizei count, GLenum type, const GLvoid* indices) {
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static AlignedVector* buffer = NULL;
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/* Do nothing if vertices aren't enabled */
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if(!(ENABLED_VERTEX_ATTRIBUTES & VERTEX_ENABLED_FLAG)) {
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return;
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}
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/* Initialize the buffer on first call */
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if(!buffer) {
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buffer = (AlignedVector*) malloc(sizeof(AlignedVector));
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aligned_vector_init(buffer, sizeof(ClipVertex));
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} else {
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/* Else, resize to zero (this will retain the allocated memory) */
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aligned_vector_resize(buffer, 0);
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}
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GLubyte vstride = (VERTEX_POINTER.stride) ? VERTEX_POINTER.stride : VERTEX_POINTER.size * byte_size(VERTEX_POINTER.type);
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const GLubyte* vptr = VERTEX_POINTER.ptr;
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GLubyte cstride = (DIFFUSE_POINTER.stride) ? DIFFUSE_POINTER.stride : DIFFUSE_POINTER.size * byte_size(DIFFUSE_POINTER.type);
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const GLubyte* cptr = DIFFUSE_POINTER.ptr;
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GLubyte uvstride = (UV_POINTER.stride) ? UV_POINTER.stride : UV_POINTER.size * byte_size(UV_POINTER.type);
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const GLubyte* uvptr = UV_POINTER.ptr;
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GLubyte nstride = (NORMAL_POINTER.stride) ? NORMAL_POINTER.stride : NORMAL_POINTER.size * byte_size(NORMAL_POINTER.type);
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const GLubyte* nptr = NORMAL_POINTER.ptr;
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generate(buffer, mode, first, count, (GLubyte*) indices, type, vptr, vstride, cptr, cstride, uvptr, uvstride, nptr, nstride);
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light(buffer);
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transform(buffer);
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divide(buffer);
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push(buffer, activePolyList());
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}
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void APIENTRY glDrawElements(GLenum mode, GLsizei count, GLenum type, const GLvoid* indices) {
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TRACE();
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if(checkImmediateModeInactive(__func__)) {
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return;
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}
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submitVertices(mode, 0, count, type, indices);
|
|
}
|
|
|
|
void APIENTRY glDrawArrays(GLenum mode, GLint first, GLsizei count) {
|
|
TRACE();
|
|
|
|
if(checkImmediateModeInactive(__func__)) {
|
|
return;
|
|
}
|
|
|
|
submitVertices(mode, first, count, GL_UNSIGNED_SHORT, NULL);
|
|
}
|
|
|
|
void APIENTRY glEnableClientState(GLenum cap) {
|
|
TRACE();
|
|
|
|
switch(cap) {
|
|
case GL_VERTEX_ARRAY:
|
|
ENABLED_VERTEX_ATTRIBUTES |= VERTEX_ENABLED_FLAG;
|
|
break;
|
|
case GL_COLOR_ARRAY:
|
|
ENABLED_VERTEX_ATTRIBUTES |= DIFFUSE_ENABLED_FLAG;
|
|
break;
|
|
case GL_NORMAL_ARRAY:
|
|
ENABLED_VERTEX_ATTRIBUTES |= NORMAL_ENABLED_FLAG;
|
|
break;
|
|
case GL_TEXTURE_COORD_ARRAY:
|
|
(ACTIVE_CLIENT_TEXTURE) ?
|
|
(ENABLED_VERTEX_ATTRIBUTES |= ST_ENABLED_FLAG):
|
|
(ENABLED_VERTEX_ATTRIBUTES |= UV_ENABLED_FLAG);
|
|
break;
|
|
default:
|
|
_glKosThrowError(GL_INVALID_ENUM, "glEnableClientState");
|
|
}
|
|
}
|
|
|
|
void APIENTRY glDisableClientState(GLenum cap) {
|
|
TRACE();
|
|
|
|
switch(cap) {
|
|
case GL_VERTEX_ARRAY:
|
|
ENABLED_VERTEX_ATTRIBUTES &= ~VERTEX_ENABLED_FLAG;
|
|
break;
|
|
case GL_COLOR_ARRAY:
|
|
ENABLED_VERTEX_ATTRIBUTES &= ~DIFFUSE_ENABLED_FLAG;
|
|
break;
|
|
case GL_NORMAL_ARRAY:
|
|
ENABLED_VERTEX_ATTRIBUTES &= ~NORMAL_ENABLED_FLAG;
|
|
break;
|
|
case GL_TEXTURE_COORD_ARRAY:
|
|
(ACTIVE_CLIENT_TEXTURE) ?
|
|
(ENABLED_VERTEX_ATTRIBUTES &= ~ST_ENABLED_FLAG):
|
|
(ENABLED_VERTEX_ATTRIBUTES &= ~UV_ENABLED_FLAG);
|
|
break;
|
|
default:
|
|
_glKosThrowError(GL_INVALID_ENUM, "glDisableClientState");
|
|
}
|
|
}
|
|
|
|
void APIENTRY glClientActiveTextureARB(GLenum texture) {
|
|
TRACE();
|
|
|
|
if(texture < GL_TEXTURE0_ARB || texture > GL_TEXTURE0_ARB + MAX_TEXTURE_UNITS) {
|
|
_glKosThrowError(GL_INVALID_ENUM, "glClientActiveTextureARB");
|
|
}
|
|
|
|
if(_glKosHasError()) {
|
|
_glKosPrintError();
|
|
return;
|
|
}
|
|
|
|
ACTIVE_CLIENT_TEXTURE = (texture == GL_TEXTURE1_ARB) ? 1 : 0;
|
|
}
|
|
|
|
void APIENTRY glTexCoordPointer(GLint size, GLenum type, GLsizei stride, const GLvoid * pointer) {
|
|
TRACE();
|
|
|
|
AttribPointer* tointer = (ACTIVE_CLIENT_TEXTURE == 0) ? &UV_POINTER : &ST_POINTER;
|
|
|
|
tointer->ptr = pointer;
|
|
tointer->stride = stride;
|
|
tointer->type = type;
|
|
tointer->size = size;
|
|
}
|
|
|
|
void APIENTRY glVertexPointer(GLint size, GLenum type, GLsizei stride, const GLvoid * pointer) {
|
|
TRACE();
|
|
|
|
VERTEX_POINTER.ptr = pointer;
|
|
VERTEX_POINTER.stride = stride;
|
|
VERTEX_POINTER.type = type;
|
|
VERTEX_POINTER.size = size;
|
|
}
|
|
|
|
void APIENTRY glColorPointer(GLint size, GLenum type, GLsizei stride, const GLvoid * pointer) {
|
|
TRACE();
|
|
|
|
DIFFUSE_POINTER.ptr = pointer;
|
|
DIFFUSE_POINTER.stride = stride;
|
|
DIFFUSE_POINTER.type = type;
|
|
DIFFUSE_POINTER.size = size;
|
|
}
|
|
|
|
void APIENTRY glNormalPointer(GLenum type, GLsizei stride, const GLvoid * pointer) {
|
|
TRACE();
|
|
|
|
NORMAL_POINTER.ptr = pointer;
|
|
NORMAL_POINTER.stride = stride;
|
|
NORMAL_POINTER.type = type;
|
|
NORMAL_POINTER.size = 3;
|
|
}
|