557 lines
16 KiB
C
557 lines
16 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 <math.h>
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#include <limits.h>
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#include "private.h"
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#include "platform.h"
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AttribPointerList ATTRIB_POINTERS;
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GLuint ENABLED_VERTEX_ATTRIBUTES = 0;
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static const float ONE_OVER_TWO_FIVE_FIVE = 1.0f / 255.0f;
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extern inline GLuint _glRecalcFastPath();
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GL_FORCE_INLINE GLsizei 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_UNSIGNED_INT_2_10_10_10_REV: return sizeof(GLuint);
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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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// Used to avoid checking and updating attribute related state unless necessary
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GL_FORCE_INLINE GLboolean _glStateUnchanged(AttribPointer* p, GLint size, GLenum type, GLsizei stride) {
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return (p->size == size && p->type == type && p->stride == stride);
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}
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static void _readVertexData3f3f(const GLubyte* __restrict__ in, GLubyte* __restrict__ out) {
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vec3cpy(out, in);
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}
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// 10:10:10:2REV format
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static void _readVertexData1i3f(const GLubyte* in, GLubyte* out) {
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static const float MULTIPLIER = 1.0f / 1023.0f;
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GLfloat* output = (GLfloat*) out;
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union {
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int value;
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struct {
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signed int x: 10;
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signed int y: 10;
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signed int z: 10;
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signed int w: 2;
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} bits;
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} input;
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input.value = *((const GLint*) in);
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output[0] = (2.0f * (float) input.bits.x + 1.0f) * MULTIPLIER;
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output[1] = (2.0f * (float) input.bits.y + 1.0f) * MULTIPLIER;
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output[2] = (2.0f * (float) input.bits.z + 1.0f) * MULTIPLIER;
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}
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static void _readVertexData3us3f(const GLubyte* in, GLubyte* out) {
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const GLushort* input = (const GLushort*) in;
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float* output = (float*) out;
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output[0] = input[0];
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output[1] = input[1];
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output[2] = input[2];
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}
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static void _readVertexData3ui3f(const GLubyte* in, GLubyte* out) {
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const GLuint* input = (const GLuint*) in;
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float* output = (float*) out;
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output[0] = input[0];
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output[1] = input[1];
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output[2] = input[2];
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}
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static void _readVertexData3ub3f(const GLubyte* input, GLubyte* out) {
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float* output = (float*) out;
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output[0] = input[0] * ONE_OVER_TWO_FIVE_FIVE;
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output[1] = input[1] * ONE_OVER_TWO_FIVE_FIVE;
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output[2] = input[2] * ONE_OVER_TWO_FIVE_FIVE;
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}
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static void _readVertexData2f2f(const GLubyte* in, GLubyte* out) {
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vec2cpy(out, in);
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}
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static void _readVertexData2f3f(const GLubyte* in, GLubyte* out) {
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const float* input = (const float*) in;
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float* output = (float*) out;
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vec2cpy(output, input);
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output[2] = 0.0f;
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}
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static void _readVertexData2ub3f(const GLubyte* input, GLubyte* out) {
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float* output = (float*) out;
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output[0] = input[0] * ONE_OVER_TWO_FIVE_FIVE;
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output[1] = input[1] * ONE_OVER_TWO_FIVE_FIVE;
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output[2] = 0.0f;
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}
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static void _readVertexData2us3f(const GLubyte* in, GLubyte* out) {
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const GLushort* input = (const GLushort*) in;
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float* output = (float*) out;
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output[0] = input[0];
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output[1] = input[1];
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output[2] = 0.0f;
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}
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static void _readVertexData2us2f(const GLubyte* in, GLubyte* out) {
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const GLushort* input = (const GLushort*) in;
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float* output = (float*) out;
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output[0] = (float)input[0] / SHRT_MAX;
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output[1] = (float)input[1] / SHRT_MAX;
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}
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static void _readVertexData2ui2f(const GLubyte* in, GLubyte* out) {
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const GLuint* input = (const GLuint*) in;
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float* output = (float*) out;
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output[0] = input[0];
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output[1] = input[1];
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}
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static void _readVertexData2ub2f(const GLubyte* input, GLubyte* out) {
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float* output = (float*) out;
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output[0] = input[0] * ONE_OVER_TWO_FIVE_FIVE;
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output[1] = input[1] * ONE_OVER_TWO_FIVE_FIVE;
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}
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static void _readVertexData2ui3f(const GLubyte* in, GLubyte* out) {
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const GLuint* input = (const GLuint*) in;
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float* output = (float*) out;
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output[0] = input[0];
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output[1] = input[1];
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output[2] = 0.0f;
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}
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static void _readVertexData4ubARGB(const GLubyte* input, GLubyte* output) {
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output[R8IDX] = input[0];
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output[G8IDX] = input[1];
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output[B8IDX] = input[2];
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output[A8IDX] = input[3];
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}
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static void _readVertexData4fARGB(const GLubyte* in, GLubyte* output) {
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const float* input = (const float*) in;
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output[R8IDX] = (GLubyte) clamp(input[0] * 255.0f, 0, 255);
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output[G8IDX] = (GLubyte) clamp(input[1] * 255.0f, 0, 255);
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output[B8IDX] = (GLubyte) clamp(input[2] * 255.0f, 0, 255);
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output[A8IDX] = (GLubyte) clamp(input[3] * 255.0f, 0, 255);
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}
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static void _readVertexData3fARGB(const GLubyte* in, GLubyte* output) {
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const float* input = (const float*) in;
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output[R8IDX] = (GLubyte) clamp(input[0] * 255.0f, 0, 255);
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output[G8IDX] = (GLubyte) clamp(input[1] * 255.0f, 0, 255);
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output[B8IDX] = (GLubyte) clamp(input[2] * 255.0f, 0, 255);
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output[A8IDX] = 255;
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}
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static void _readVertexData3ubARGB(const GLubyte* __restrict__ input, GLubyte* __restrict__ output) {
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output[R8IDX] = input[0];
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output[G8IDX] = input[1];
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output[B8IDX] = input[2];
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output[A8IDX] = 255;
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}
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static void _readVertexData4ubRevARGB(const GLubyte* __restrict__ input, GLubyte* __restrict__ output) {
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argbcpy(output, input);
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}
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static void _readVertexData4fRevARGB(const GLubyte* __restrict__ in, GLubyte* __restrict__ output) {
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const float* input = (const float*) in;
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output[0] = (GLubyte) clamp(input[0] * 255.0f, 0, 255);
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output[1] = (GLubyte) clamp(input[1] * 255.0f, 0, 255);
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output[2] = (GLubyte) clamp(input[2] * 255.0f, 0, 255);
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output[3] = (GLubyte) clamp(input[3] * 255.0f, 0, 255);
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}
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static void _fillWithNegZVE(const GLubyte* __restrict__ input, GLubyte* __restrict__ out) {
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_GL_UNUSED(input);
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typedef struct { float x, y, z; } V;
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static const V NegZ = {0.0f, 0.0f, -1.0f};
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*((V*) out) = NegZ;
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}
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static void _fillWhiteARGB(const GLubyte* __restrict__ input, GLubyte* __restrict__ output) {
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_GL_UNUSED(input);
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*((uint32_t*) output) = ~0;
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}
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static void _fillZero2f(const GLubyte* __restrict__ input, GLubyte* __restrict__ out) {
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_GL_UNUSED(input);
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//memset(out, 0, sizeof(float) * 2);
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// memset does 8 byte writes - faster to manually write as uint32
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uint32_t* dst = (uint32_t*)out;
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dst[0] = 0;
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dst[1] = 0;
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}
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static void _readVertexData3usARGB(const GLubyte* input, GLubyte* output) {
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_GL_UNUSED(input);
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_GL_UNUSED(output);
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gl_assert(0 && "Not Implemented");
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}
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static void _readVertexData3uiARGB(const GLubyte* input, GLubyte* output) {
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_GL_UNUSED(input);
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_GL_UNUSED(output);
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gl_assert(0 && "Not Implemented");
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}
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static void _readVertexData4usARGB(const GLubyte* input, GLubyte* output) {
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_GL_UNUSED(input);
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_GL_UNUSED(output);
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gl_assert(0 && "Not Implemented");
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}
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static void _readVertexData4uiARGB(const GLubyte* input, GLubyte* output) {
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_GL_UNUSED(input);
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_GL_UNUSED(output);
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gl_assert(0 && "Not Implemented");
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}
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static void _readVertexData4usRevARGB(const GLubyte* input, GLubyte* output) {
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_GL_UNUSED(input);
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_GL_UNUSED(output);
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gl_assert(0 && "Not Implemented");
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}
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static void _readVertexData4uiRevARGB(const GLubyte* input, GLubyte* output) {
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_GL_UNUSED(input);
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_GL_UNUSED(output);
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gl_assert(0 && "Not Implemented");
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}
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static ReadAttributeFunc calcReadDiffuseFunc() {
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if((ENABLED_VERTEX_ATTRIBUTES & DIFFUSE_ENABLED_FLAG) != DIFFUSE_ENABLED_FLAG) {
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/* Just fill the whole thing white if the attribute is disabled */
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return _fillWhiteARGB;
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}
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switch(ATTRIB_POINTERS.colour.type) {
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default:
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case GL_DOUBLE:
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case GL_FLOAT:
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return (ATTRIB_POINTERS.colour.size == 3) ? _readVertexData3fARGB:
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(ATTRIB_POINTERS.colour.size == 4) ? _readVertexData4fARGB:
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_readVertexData4fRevARGB;
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case GL_BYTE:
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case GL_UNSIGNED_BYTE:
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return (ATTRIB_POINTERS.colour.size == 3) ? _readVertexData3ubARGB:
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(ATTRIB_POINTERS.colour.size == 4) ? _readVertexData4ubARGB:
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_readVertexData4ubRevARGB;
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case GL_SHORT:
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case GL_UNSIGNED_SHORT:
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return (ATTRIB_POINTERS.colour.size == 3) ? _readVertexData3usARGB:
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(ATTRIB_POINTERS.colour.size == 4) ? _readVertexData4usARGB:
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_readVertexData4usRevARGB;
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case GL_INT:
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case GL_UNSIGNED_INT:
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return (ATTRIB_POINTERS.colour.size == 3) ? _readVertexData3uiARGB:
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(ATTRIB_POINTERS.colour.size == 4) ? _readVertexData4uiARGB:
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_readVertexData4uiRevARGB;
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}
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}
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static ReadAttributeFunc calcReadPositionFunc() {
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switch(ATTRIB_POINTERS.vertex.type) {
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default:
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case GL_DOUBLE:
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case GL_FLOAT:
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return (ATTRIB_POINTERS.vertex.size == 3) ? _readVertexData3f3f:
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_readVertexData2f3f;
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case GL_BYTE:
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case GL_UNSIGNED_BYTE:
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return (ATTRIB_POINTERS.vertex.size == 3) ? _readVertexData3ub3f:
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_readVertexData2ub3f;
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case GL_SHORT:
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case GL_UNSIGNED_SHORT:
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return (ATTRIB_POINTERS.vertex.size == 3) ? _readVertexData3us3f:
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_readVertexData2us3f;
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case GL_INT:
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case GL_UNSIGNED_INT:
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return (ATTRIB_POINTERS.vertex.size == 3) ? _readVertexData3ui3f:
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_readVertexData2ui3f;
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}
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}
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static ReadAttributeFunc calcReadUVFunc() {
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if((ENABLED_VERTEX_ATTRIBUTES & UV_ENABLED_FLAG) != UV_ENABLED_FLAG) {
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return _fillZero2f;
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}
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switch(ATTRIB_POINTERS.uv.type) {
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default:
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case GL_DOUBLE:
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case GL_FLOAT:
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return _readVertexData2f2f;
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case GL_BYTE:
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case GL_UNSIGNED_BYTE:
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return _readVertexData2ub2f;
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case GL_SHORT:
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case GL_UNSIGNED_SHORT:
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return _readVertexData2us2f;
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case GL_INT:
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case GL_UNSIGNED_INT:
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return _readVertexData2ui2f;
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}
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}
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static ReadAttributeFunc calcReadSTFunc() {
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if((ENABLED_VERTEX_ATTRIBUTES & ST_ENABLED_FLAG) != ST_ENABLED_FLAG) {
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return _fillZero2f;
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}
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switch(ATTRIB_POINTERS.st.type) {
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default:
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case GL_DOUBLE:
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case GL_FLOAT:
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return _readVertexData2f2f;
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case GL_BYTE:
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case GL_UNSIGNED_BYTE:
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return _readVertexData2ub2f;
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case GL_SHORT:
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case GL_UNSIGNED_SHORT:
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return _readVertexData2us2f;
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case GL_INT:
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case GL_UNSIGNED_INT:
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return _readVertexData2ui2f;
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}
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}
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static ReadAttributeFunc calcReadNormalFunc() {
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if((ENABLED_VERTEX_ATTRIBUTES & NORMAL_ENABLED_FLAG) != NORMAL_ENABLED_FLAG) {
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return _fillWithNegZVE;
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}
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switch(ATTRIB_POINTERS.normal.type) {
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default:
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case GL_DOUBLE:
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case GL_FLOAT:
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return _readVertexData3f3f;
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break;
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case GL_BYTE:
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case GL_UNSIGNED_BYTE:
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return _readVertexData3ub3f;
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break;
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case GL_SHORT:
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case GL_UNSIGNED_SHORT:
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return _readVertexData3us3f;
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break;
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case GL_INT:
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case GL_UNSIGNED_INT:
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return _readVertexData3ui3f;
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break;
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case GL_UNSIGNED_INT_2_10_10_10_REV:
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return _readVertexData1i3f;
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break;
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}
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}
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void APIENTRY glEnableClientState(GLenum cap) {
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TRACE();
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switch(cap) {
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case GL_VERTEX_ARRAY:
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ENABLED_VERTEX_ATTRIBUTES |= VERTEX_ENABLED_FLAG;
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ATTRIB_POINTERS.vertex_func = calcReadPositionFunc();
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break;
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case GL_COLOR_ARRAY:
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ENABLED_VERTEX_ATTRIBUTES |= DIFFUSE_ENABLED_FLAG;
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ATTRIB_POINTERS.colour_func = calcReadDiffuseFunc();
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break;
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case GL_NORMAL_ARRAY:
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ENABLED_VERTEX_ATTRIBUTES |= NORMAL_ENABLED_FLAG;
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ATTRIB_POINTERS.normal_func = calcReadNormalFunc();
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break;
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case GL_TEXTURE_COORD_ARRAY:
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(ACTIVE_CLIENT_TEXTURE) ?
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(ENABLED_VERTEX_ATTRIBUTES |= ST_ENABLED_FLAG):
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(ENABLED_VERTEX_ATTRIBUTES |= UV_ENABLED_FLAG);
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ATTRIB_POINTERS.uv_func = calcReadUVFunc();
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ATTRIB_POINTERS.st_func = calcReadSTFunc();
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break;
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default:
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_glKosThrowError(GL_INVALID_ENUM, __func__);
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}
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/* It's possible that we called glVertexPointer and friends before
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* calling glEnableClientState, so we should recheck to make sure
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* everything is in the right format with this new information */
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_glRecalcFastPath();
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}
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void APIENTRY glDisableClientState(GLenum cap) {
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TRACE();
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switch(cap) {
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case GL_VERTEX_ARRAY:
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ENABLED_VERTEX_ATTRIBUTES &= ~VERTEX_ENABLED_FLAG;
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ATTRIB_POINTERS.vertex_func = calcReadPositionFunc();
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break;
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case GL_COLOR_ARRAY:
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ENABLED_VERTEX_ATTRIBUTES &= ~DIFFUSE_ENABLED_FLAG;
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ATTRIB_POINTERS.colour_func = calcReadDiffuseFunc();
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break;
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case GL_NORMAL_ARRAY:
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ENABLED_VERTEX_ATTRIBUTES &= ~NORMAL_ENABLED_FLAG;
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ATTRIB_POINTERS.normal_func = calcReadNormalFunc();
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break;
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case GL_TEXTURE_COORD_ARRAY:
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(ACTIVE_CLIENT_TEXTURE) ?
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(ENABLED_VERTEX_ATTRIBUTES &= ~ST_ENABLED_FLAG):
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(ENABLED_VERTEX_ATTRIBUTES &= ~UV_ENABLED_FLAG);
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ATTRIB_POINTERS.uv_func = calcReadUVFunc();
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ATTRIB_POINTERS.st_func = calcReadSTFunc();
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break;
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default:
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_glKosThrowError(GL_INVALID_ENUM, __func__);
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}
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/* State changed, recalculate */
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_glRecalcFastPath();
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}
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void APIENTRY glTexCoordPointer(GLint size, GLenum type, GLsizei stride, const GLvoid * pointer) {
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TRACE();
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stride = (stride) ? stride : size * byte_size(type);
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AttribPointer* tointer = (ACTIVE_CLIENT_TEXTURE == 0) ? &ATTRIB_POINTERS.uv : &ATTRIB_POINTERS.st;
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tointer->ptr = pointer;
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if(_glStateUnchanged(tointer, size, type, stride)) return;
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if(size < 1 || size > 4) {
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_glKosThrowError(GL_INVALID_VALUE, __func__);
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return;
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}
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tointer->stride = stride;
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tointer->type = type;
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tointer->size = size;
|
|
|
|
ATTRIB_POINTERS.uv_func = calcReadUVFunc();
|
|
ATTRIB_POINTERS.st_func = calcReadSTFunc();
|
|
_glRecalcFastPath();
|
|
}
|
|
|
|
void APIENTRY glVertexPointer(GLint size, GLenum type, GLsizei stride, const GLvoid * pointer) {
|
|
TRACE();
|
|
|
|
stride = (stride) ? stride : (size * byte_size(type));
|
|
ATTRIB_POINTERS.vertex.ptr = pointer;
|
|
|
|
if(_glStateUnchanged(&ATTRIB_POINTERS.vertex, size, type, stride)) return;
|
|
|
|
if(size < 2 || size > 4) {
|
|
_glKosThrowError(GL_INVALID_VALUE, __func__);
|
|
return;
|
|
}
|
|
|
|
ATTRIB_POINTERS.vertex.stride = stride;
|
|
ATTRIB_POINTERS.vertex.type = type;
|
|
ATTRIB_POINTERS.vertex.size = size;
|
|
ATTRIB_POINTERS.vertex_func = calcReadPositionFunc();
|
|
|
|
_glRecalcFastPath();
|
|
}
|
|
|
|
void APIENTRY glColorPointer(GLint size, GLenum type, GLsizei stride, const GLvoid * pointer) {
|
|
TRACE();
|
|
|
|
stride = (stride) ? stride : ((size == GL_BGRA) ? 4 : size) * byte_size(type);
|
|
ATTRIB_POINTERS.colour.ptr = pointer;
|
|
|
|
if(_glStateUnchanged(&ATTRIB_POINTERS.colour, size, type, stride)) return;
|
|
|
|
if(size != 3 && size != 4 && size != GL_BGRA) {
|
|
_glKosThrowError(GL_INVALID_VALUE, __func__);
|
|
return;
|
|
}
|
|
|
|
ATTRIB_POINTERS.colour.type = type;
|
|
ATTRIB_POINTERS.colour.size = size;
|
|
ATTRIB_POINTERS.colour.stride = stride;
|
|
ATTRIB_POINTERS.colour_func = calcReadDiffuseFunc();
|
|
|
|
_glRecalcFastPath();
|
|
}
|
|
|
|
void APIENTRY glNormalPointer(GLenum type, GLsizei stride, const GLvoid * pointer) {
|
|
TRACE();
|
|
|
|
GLint validTypes[] = {
|
|
GL_DOUBLE,
|
|
GL_FLOAT,
|
|
GL_BYTE,
|
|
GL_UNSIGNED_BYTE,
|
|
GL_INT,
|
|
GL_UNSIGNED_INT,
|
|
GL_UNSIGNED_INT_2_10_10_10_REV,
|
|
0
|
|
};
|
|
|
|
stride = (stride) ? stride : ATTRIB_POINTERS.normal.size * byte_size(type);
|
|
ATTRIB_POINTERS.normal.ptr = pointer;
|
|
|
|
if(_glStateUnchanged(&ATTRIB_POINTERS.normal, 3, type, stride)) return;
|
|
|
|
if(_glCheckValidEnum(type, validTypes, __func__) != 0) {
|
|
return;
|
|
}
|
|
|
|
ATTRIB_POINTERS.normal.size = (type == GL_UNSIGNED_INT_2_10_10_10_REV) ? 1 : 3;
|
|
ATTRIB_POINTERS.normal.stride = stride;
|
|
ATTRIB_POINTERS.normal.type = type;
|
|
ATTRIB_POINTERS.normal_func = calcReadNormalFunc();
|
|
|
|
_glRecalcFastPath();
|
|
}
|
|
|
|
|
|
void _glInitAttributePointers() {
|
|
TRACE();
|
|
|
|
glVertexPointer(4, GL_FLOAT, 0, NULL);
|
|
glTexCoordPointer(2, GL_FLOAT, 0, NULL);
|
|
glColorPointer(4, GL_FLOAT, 0, NULL);
|
|
glNormalPointer(GL_FLOAT, 0, NULL);
|
|
}
|