Initial Contribution
diff --git a/opengl/libagl/array.cpp b/opengl/libagl/array.cpp
new file mode 100644
index 0000000..1f6757d
--- /dev/null
+++ b/opengl/libagl/array.cpp
@@ -0,0 +1,1557 @@
+/*
+** Copyright 2006, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+** http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "context.h"
+#include "fp.h"
+#include "state.h"
+#include "matrix.h"
+#include "vertex.h"
+#include "light.h"
+#include "primitives.h"
+#include "texture.h"
+#include "BufferObjectManager.h"
+
+// ----------------------------------------------------------------------------
+
+#define VC_CACHE_STATISTICS 0
+#define VC_CACHE_TYPE_NONE 0
+#define VC_CACHE_TYPE_INDEXED 1
+#define VC_CACHE_TYPE_LRU 2
+#define VC_CACHE_TYPE VC_CACHE_TYPE_INDEXED
+
+#if VC_CACHE_STATISTICS
+#include <utils/Timers.h>
+#endif
+
+// ----------------------------------------------------------------------------
+
+namespace android {
+
+static void validate_arrays(ogles_context_t* c, GLenum mode);
+
+static void compileElements__generic(ogles_context_t*,
+ vertex_t*, GLint, GLsizei);
+static void compileElement__generic(ogles_context_t*,
+ vertex_t*, GLint);
+
+static void drawPrimitivesPoints(ogles_context_t*, GLint, GLsizei);
+static void drawPrimitivesLineStrip(ogles_context_t*, GLint, GLsizei);
+static void drawPrimitivesLineLoop(ogles_context_t*, GLint, GLsizei);
+static void drawPrimitivesLines(ogles_context_t*, GLint, GLsizei);
+static void drawPrimitivesTriangleStrip(ogles_context_t*, GLint, GLsizei);
+static void drawPrimitivesTriangleFan(ogles_context_t*, GLint, GLsizei);
+static void drawPrimitivesTriangles(ogles_context_t*, GLint, GLsizei);
+
+static void drawIndexedPrimitivesPoints(ogles_context_t*,
+ GLsizei, const GLvoid*);
+static void drawIndexedPrimitivesLineStrip(ogles_context_t*,
+ GLsizei, const GLvoid*);
+static void drawIndexedPrimitivesLineLoop(ogles_context_t*,
+ GLsizei, const GLvoid*);
+static void drawIndexedPrimitivesLines(ogles_context_t*,
+ GLsizei, const GLvoid*);
+static void drawIndexedPrimitivesTriangleStrip(ogles_context_t*,
+ GLsizei, const GLvoid*);
+static void drawIndexedPrimitivesTriangleFan(ogles_context_t*,
+ GLsizei, const GLvoid*);
+static void drawIndexedPrimitivesTriangles(ogles_context_t*,
+ GLsizei, const GLvoid*);
+
+// ----------------------------------------------------------------------------
+
+typedef void (*arrays_prims_fct_t)(ogles_context_t*, GLint, GLsizei);
+static const arrays_prims_fct_t drawArraysPrims[] = {
+ drawPrimitivesPoints,
+ drawPrimitivesLines,
+ drawPrimitivesLineLoop,
+ drawPrimitivesLineStrip,
+ drawPrimitivesTriangles,
+ drawPrimitivesTriangleStrip,
+ drawPrimitivesTriangleFan
+};
+
+typedef void (*elements_prims_fct_t)(ogles_context_t*, GLsizei, const GLvoid*);
+static const elements_prims_fct_t drawElementsPrims[] = {
+ drawIndexedPrimitivesPoints,
+ drawIndexedPrimitivesLines,
+ drawIndexedPrimitivesLineLoop,
+ drawIndexedPrimitivesLineStrip,
+ drawIndexedPrimitivesTriangles,
+ drawIndexedPrimitivesTriangleStrip,
+ drawIndexedPrimitivesTriangleFan
+};
+
+// ----------------------------------------------------------------------------
+#if 0
+#pragma mark -
+#endif
+
+void ogles_init_array(ogles_context_t* c)
+{
+ c->arrays.vertex.size = 4;
+ c->arrays.vertex.type = GL_FLOAT;
+ c->arrays.color.size = 4;
+ c->arrays.color.type = GL_FLOAT;
+ c->arrays.normal.size = 4;
+ c->arrays.normal.type = GL_FLOAT;
+ for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; i++) {
+ c->arrays.texture[i].size = 4;
+ c->arrays.texture[i].type = GL_FLOAT;
+ }
+ c->vc.init();
+
+ if (!c->vc.vBuffer) {
+ // this could have failed
+ ogles_error(c, GL_OUT_OF_MEMORY);
+ }
+}
+
+void ogles_uninit_array(ogles_context_t* c)
+{
+ c->vc.uninit();
+}
+
+// ----------------------------------------------------------------------------
+#if 0
+#pragma mark -
+#pragma mark Array fetchers
+#endif
+
+static void currentColor(ogles_context_t* c, GLfixed* v, const GLvoid*) {
+ memcpy(v, c->current.color.v, sizeof(vec4_t));
+}
+static void currentColor_clamp(ogles_context_t* c, GLfixed* v, const GLvoid*) {
+ memcpy(v, c->currentColorClamped.v, sizeof(vec4_t));
+}
+static void currentNormal(ogles_context_t* c, GLfixed* v, const GLvoid*) {
+ memcpy(v, c->currentNormal.v, sizeof(vec3_t));
+}
+static void currentTexCoord(ogles_context_t* c, GLfixed* v, const GLvoid*) {
+ memcpy(v, c->current.texture[c->arrays.tmu].v, sizeof(vec4_t));
+}
+
+
+static void fetchNop(ogles_context_t*, GLfixed*, const GLvoid*) {
+}
+static void fetch2b(ogles_context_t*, GLfixed* v, const GLbyte* p) {
+ v[0] = gglIntToFixed(p[0]);
+ v[1] = gglIntToFixed(p[1]);
+}
+static void fetch2s(ogles_context_t*, GLfixed* v, const GLshort* p) {
+ v[0] = gglIntToFixed(p[0]);
+ v[1] = gglIntToFixed(p[1]);
+}
+static void fetch2x(ogles_context_t*, GLfixed* v, const GLfixed* p) {
+ memcpy(v, p, 2*sizeof(GLfixed));
+}
+static void fetch2f(ogles_context_t*, GLfixed* v, const GLfloat* p) {
+ v[0] = gglFloatToFixed(p[0]);
+ v[1] = gglFloatToFixed(p[1]);
+}
+static void fetch3b(ogles_context_t*, GLfixed* v, const GLbyte* p) {
+ v[0] = gglIntToFixed(p[0]);
+ v[1] = gglIntToFixed(p[1]);
+ v[2] = gglIntToFixed(p[2]);
+}
+static void fetch3s(ogles_context_t*, GLfixed* v, const GLshort* p) {
+ v[0] = gglIntToFixed(p[0]);
+ v[1] = gglIntToFixed(p[1]);
+ v[2] = gglIntToFixed(p[2]);
+}
+static void fetch3x(ogles_context_t*, GLfixed* v, const GLfixed* p) {
+ memcpy(v, p, 3*sizeof(GLfixed));
+}
+static void fetch3f(ogles_context_t*, GLfixed* v, const GLfloat* p) {
+ v[0] = gglFloatToFixed(p[0]);
+ v[1] = gglFloatToFixed(p[1]);
+ v[2] = gglFloatToFixed(p[2]);
+}
+static void fetch4b(ogles_context_t*, GLfixed* v, const GLbyte* p) {
+ v[0] = gglIntToFixed(p[0]);
+ v[1] = gglIntToFixed(p[1]);
+ v[2] = gglIntToFixed(p[2]);
+ v[3] = gglIntToFixed(p[3]);
+}
+static void fetch4s(ogles_context_t*, GLfixed* v, const GLshort* p) {
+ v[0] = gglIntToFixed(p[0]);
+ v[1] = gglIntToFixed(p[1]);
+ v[2] = gglIntToFixed(p[2]);
+ v[3] = gglIntToFixed(p[3]);
+}
+static void fetch4x(ogles_context_t*, GLfixed* v, const GLfixed* p) {
+ memcpy(v, p, 4*sizeof(GLfixed));
+}
+static void fetch4f(ogles_context_t*, GLfixed* v, const GLfloat* p) {
+ v[0] = gglFloatToFixed(p[0]);
+ v[1] = gglFloatToFixed(p[1]);
+ v[2] = gglFloatToFixed(p[2]);
+ v[3] = gglFloatToFixed(p[3]);
+}
+static void fetchExpand4ub(ogles_context_t*, GLfixed* v, const GLubyte* p) {
+ v[0] = GGL_UB_TO_X(p[0]);
+ v[1] = GGL_UB_TO_X(p[1]);
+ v[2] = GGL_UB_TO_X(p[2]);
+ v[3] = GGL_UB_TO_X(p[3]);
+}
+static void fetchClamp4x(ogles_context_t*, GLfixed* v, const GLfixed* p) {
+ v[0] = gglClampx(p[0]);
+ v[1] = gglClampx(p[1]);
+ v[2] = gglClampx(p[2]);
+ v[3] = gglClampx(p[3]);
+}
+static void fetchClamp4f(ogles_context_t*, GLfixed* v, const GLfloat* p) {
+ v[0] = gglClampx(gglFloatToFixed(p[0]));
+ v[1] = gglClampx(gglFloatToFixed(p[1]));
+ v[2] = gglClampx(gglFloatToFixed(p[2]));
+ v[3] = gglClampx(gglFloatToFixed(p[3]));
+}
+static void fetchExpand3ub(ogles_context_t*, GLfixed* v, const GLubyte* p) {
+ v[0] = GGL_UB_TO_X(p[0]);
+ v[1] = GGL_UB_TO_X(p[1]);
+ v[2] = GGL_UB_TO_X(p[2]);
+ v[3] = 0x10000;
+}
+static void fetchClamp3x(ogles_context_t*, GLfixed* v, const GLfixed* p) {
+ v[0] = gglClampx(p[0]);
+ v[1] = gglClampx(p[1]);
+ v[2] = gglClampx(p[2]);
+ v[3] = 0x10000;
+}
+static void fetchClamp3f(ogles_context_t*, GLfixed* v, const GLfloat* p) {
+ v[0] = gglClampx(gglFloatToFixed(p[0]));
+ v[1] = gglClampx(gglFloatToFixed(p[1]));
+ v[2] = gglClampx(gglFloatToFixed(p[2]));
+ v[3] = 0x10000;
+}
+static void fetchExpand3b(ogles_context_t*, GLfixed* v, const GLbyte* p) {
+ v[0] = GGL_B_TO_X(p[0]);
+ v[1] = GGL_B_TO_X(p[1]);
+ v[2] = GGL_B_TO_X(p[2]);
+}
+static void fetchExpand3s(ogles_context_t*, GLfixed* v, const GLshort* p) {
+ v[0] = GGL_S_TO_X(p[0]);
+ v[1] = GGL_S_TO_X(p[1]);
+ v[2] = GGL_S_TO_X(p[2]);
+}
+
+typedef array_t::fetcher_t fn_t;
+
+static const fn_t color_fct[2][16] = { // size={3,4}, type={ub,f,x}
+ { 0, (fn_t)fetchExpand3ub, 0, 0, 0, 0,
+ (fn_t)fetch3f, 0, 0, 0, 0, 0,
+ (fn_t)fetch3x },
+ { 0, (fn_t)fetchExpand4ub, 0, 0, 0, 0,
+ (fn_t)fetch4f, 0, 0, 0, 0, 0,
+ (fn_t)fetch4x },
+};
+static const fn_t color_clamp_fct[2][16] = { // size={3,4}, type={ub,f,x}
+ { 0, (fn_t)fetchExpand3ub, 0, 0, 0, 0,
+ (fn_t)fetchClamp3f, 0, 0, 0, 0, 0,
+ (fn_t)fetchClamp3x },
+ { 0, (fn_t)fetchExpand4ub, 0, 0, 0, 0,
+ (fn_t)fetchClamp4f, 0, 0, 0, 0, 0,
+ (fn_t)fetchClamp4x },
+};
+static const fn_t normal_fct[1][16] = { // size={3}, type={b,s,f,x}
+ { (fn_t)fetchExpand3b, 0,
+ (fn_t)fetchExpand3s, 0, 0, 0,
+ (fn_t)fetch3f, 0, 0, 0, 0, 0,
+ (fn_t)fetch3x },
+};
+static const fn_t vertex_fct[3][16] = { // size={2,3,4}, type={b,s,f,x}
+ { (fn_t)fetch2b, 0,
+ (fn_t)fetch2s, 0, 0, 0,
+ (fn_t)fetch2f, 0, 0, 0, 0, 0,
+ (fn_t)fetch3x },
+ { (fn_t)fetch3b, 0,
+ (fn_t)fetch3s, 0, 0, 0,
+ (fn_t)fetch3f, 0, 0, 0, 0, 0,
+ (fn_t)fetch3x },
+ { (fn_t)fetch4b, 0,
+ (fn_t)fetch4s, 0, 0, 0,
+ (fn_t)fetch4f, 0, 0, 0, 0, 0,
+ (fn_t)fetch4x }
+};
+static const fn_t texture_fct[3][16] = { // size={2,3,4}, type={b,s,f,x}
+ { (fn_t)fetch2b, 0,
+ (fn_t)fetch2s, 0, 0, 0,
+ (fn_t)fetch2f, 0, 0, 0, 0, 0,
+ (fn_t)fetch2x },
+ { (fn_t)fetch3b, 0,
+ (fn_t)fetch3s, 0, 0, 0,
+ (fn_t)fetch3f, 0, 0, 0, 0, 0,
+ (fn_t)fetch3x },
+ { (fn_t)fetch4b, 0,
+ (fn_t)fetch4s, 0, 0, 0,
+ (fn_t)fetch4f, 0, 0, 0, 0, 0,
+ (fn_t)fetch4x }
+};
+
+// ----------------------------------------------------------------------------
+#if 0
+#pragma mark -
+#pragma mark array_t
+#endif
+
+void array_t::init(
+ GLint size, GLenum type, GLsizei stride,
+ const GLvoid *pointer, const buffer_t* bo, GLsizei count)
+{
+ if (!stride) {
+ stride = size;
+ switch (type) {
+ case GL_SHORT:
+ case GL_UNSIGNED_SHORT:
+ stride *= 2;
+ break;
+ case GL_FLOAT:
+ case GL_FIXED:
+ stride *= 4;
+ break;
+ }
+ }
+ this->size = size;
+ this->type = type;
+ this->stride = stride;
+ this->pointer = pointer;
+ this->bo = bo;
+ this->bounds = count;
+}
+
+inline void array_t::resolve()
+{
+ physical_pointer = (bo) ? (bo->data + uintptr_t(pointer)) : pointer;
+}
+
+// ----------------------------------------------------------------------------
+#if 0
+#pragma mark -
+#pragma mark vertex_cache_t
+#endif
+
+void vertex_cache_t::init()
+{
+ // make sure the size of vertex_t allows cache-line alignment
+ CTA<(sizeof(vertex_t) & 0x1F) == 0> assertAlignedSize;
+
+ const int align = 32;
+ const size_t s = VERTEX_BUFFER_SIZE + VERTEX_CACHE_SIZE;
+ const size_t size = s*sizeof(vertex_t) + align;
+ base = malloc(size);
+ if (base) {
+ memset(base, 0, size);
+ vBuffer = (vertex_t*)((size_t(base) + align - 1) & ~(align-1));
+ vCache = vBuffer + VERTEX_BUFFER_SIZE;
+ sequence = 0;
+ }
+}
+
+void vertex_cache_t::uninit()
+{
+ free(base);
+ base = vBuffer = vCache = 0;
+}
+
+void vertex_cache_t::clear()
+{
+#if VC_CACHE_STATISTICS
+ startTime = systemTime(SYSTEM_TIME_THREAD);
+ total = 0;
+ misses = 0;
+#endif
+
+#if VC_CACHE_TYPE == VC_CACHE_TYPE_LRU
+ vertex_t* v = vBuffer;
+ size_t count = VERTEX_BUFFER_SIZE + VERTEX_CACHE_SIZE;
+ do {
+ v->mru = 0;
+ v++;
+ } while (--count);
+#endif
+
+ sequence += INDEX_SEQ;
+ if (sequence >= 0x80000000LU) {
+ sequence = INDEX_SEQ;
+ vertex_t* v = vBuffer;
+ size_t count = VERTEX_BUFFER_SIZE + VERTEX_CACHE_SIZE;
+ do {
+ v->index = 0;
+ v++;
+ } while (--count);
+ }
+}
+
+void vertex_cache_t::dump_stats(GLenum mode)
+{
+#if VC_CACHE_STATISTICS
+ nsecs_t time = systemTime(SYSTEM_TIME_THREAD) - startTime;
+ uint32_t hits = total - misses;
+ uint32_t prim_count;
+ switch (mode) {
+ case GL_POINTS: prim_count = total; break;
+ case GL_LINE_STRIP: prim_count = total - 1; break;
+ case GL_LINE_LOOP: prim_count = total - 1; break;
+ case GL_LINES: prim_count = total / 2; break;
+ case GL_TRIANGLE_STRIP: prim_count = total - 2; break;
+ case GL_TRIANGLE_FAN: prim_count = total - 2; break;
+ case GL_TRIANGLES: prim_count = total / 3; break;
+ default: return;
+ }
+ printf( "total=%5u, hits=%5u, miss=%5u, hitrate=%3u%%,"
+ " prims=%5u, time=%6u us, prims/s=%d, v/t=%f\n",
+ total, hits, misses, (hits*100)/total,
+ prim_count, int(ns2us(time)), int(prim_count*float(seconds(1))/time),
+ float(misses) / prim_count);
+#endif
+}
+
+// ----------------------------------------------------------------------------
+#if 0
+#pragma mark -
+#endif
+
+static __attribute__((noinline))
+void enableDisableClientState(ogles_context_t* c, GLenum array, bool enable)
+{
+ const int tmu = c->arrays.activeTexture;
+ array_t* a;
+ switch (array) {
+ case GL_COLOR_ARRAY: a = &c->arrays.color; break;
+ case GL_NORMAL_ARRAY: a = &c->arrays.normal; break;
+ case GL_TEXTURE_COORD_ARRAY: a = &c->arrays.texture[tmu]; break;
+ case GL_VERTEX_ARRAY: a = &c->arrays.vertex; break;
+ default:
+ ogles_error(c, GL_INVALID_ENUM);
+ return;
+ }
+ a->enable = enable ? GL_TRUE : GL_FALSE;
+}
+
+// ----------------------------------------------------------------------------
+#if 0
+#pragma mark -
+#pragma mark Vertex Cache
+#endif
+
+static __attribute__((noinline))
+vertex_t* cache_vertex(ogles_context_t* c, vertex_t* v, uint32_t index)
+{
+ #if VC_CACHE_STATISTICS
+ c->vc.misses++;
+ #endif
+ if (ggl_unlikely(v->locked)) {
+ // we're just looking for an entry in the cache that is not locked.
+ // and we know that there cannot be more than 2 locked entries
+ // because a triangle needs at most 3 vertices.
+ // We never use the first and second entries because they might be in
+ // use by the striper or faner. Any other entry will do as long as
+ // it's not locked.
+ // We compute directly the index of a "free" entry from the locked
+ // state of v[2] and v[3].
+ v = c->vc.vBuffer + 2;
+ v += v[0].locked | (v[1].locked<<1);
+ }
+ // note: compileElement clears v->flags
+ c->arrays.compileElement(c, v, index);
+ v->locked = 1;
+ return v;
+}
+
+static __attribute__((noinline))
+vertex_t* fetch_vertex(ogles_context_t* c, size_t index)
+{
+ index |= c->vc.sequence;
+
+#if VC_CACHE_TYPE == VC_CACHE_TYPE_INDEXED
+
+ vertex_t* const v = c->vc.vCache +
+ (index & (vertex_cache_t::VERTEX_CACHE_SIZE-1));
+
+ if (ggl_likely(v->index == index)) {
+ v->locked = 1;
+ return v;
+ }
+ return cache_vertex(c, v, index);
+
+#elif VC_CACHE_TYPE == VC_CACHE_TYPE_LRU
+
+ vertex_t* v = c->vc.vCache +
+ (index & ((vertex_cache_t::VERTEX_CACHE_SIZE-1)>>1))*2;
+
+ // always record LRU in v[0]
+ if (ggl_likely(v[0].index == index)) {
+ v[0].locked = 1;
+ v[0].mru = 0;
+ return &v[0];
+ }
+
+ if (ggl_likely(v[1].index == index)) {
+ v[1].locked = 1;
+ v[0].mru = 1;
+ return &v[1];
+ }
+
+ const int lru = 1 - v[0].mru;
+ v[0].mru = lru;
+ return cache_vertex(c, &v[lru], index);
+
+#elif VC_CACHE_TYPE == VC_CACHE_TYPE_NONE
+
+ // just for debugging...
+ vertex_t* v = c->vc.vBuffer + 2;
+ return cache_vertex(c, v, index);
+
+#endif
+}
+
+// ----------------------------------------------------------------------------
+#if 0
+#pragma mark -
+#pragma mark Primitive Assembly
+#endif
+
+void drawPrimitivesPoints(ogles_context_t* c, GLint first, GLsizei count)
+{
+ if (ggl_unlikely(count < 1))
+ return;
+
+ // vertex cache size must be multiple of 1
+ const GLsizei vcs =
+ (vertex_cache_t::VERTEX_BUFFER_SIZE +
+ vertex_cache_t::VERTEX_CACHE_SIZE);
+ do {
+ vertex_t* v = c->vc.vBuffer;
+ GLsizei num = count > vcs ? vcs : count;
+ c->arrays.cull = vertex_t::CLIP_ALL;
+ c->arrays.compileElements(c, v, first, num);
+ first += num;
+ count -= num;
+ if (!c->arrays.cull) {
+ // quick/trivial reject of the whole batch
+ do {
+ const uint32_t cc = v[0].flags;
+ if (ggl_likely(!(cc & vertex_t::CLIP_ALL)))
+ c->prims.renderPoint(c, v);
+ v++;
+ num--;
+ } while (num);
+ }
+ } while (count);
+}
+
+// ----------------------------------------------------------------------------
+
+void drawPrimitivesLineStrip(ogles_context_t* c, GLint first, GLsizei count)
+{
+ if (ggl_unlikely(count < 2))
+ return;
+
+ vertex_t *v, *v0, *v1;
+ c->arrays.cull = vertex_t::CLIP_ALL;
+ c->arrays.compileElement(c, c->vc.vBuffer, first);
+ first += 1;
+ count -= 1;
+
+ // vertex cache size must be multiple of 1
+ const GLsizei vcs =
+ (vertex_cache_t::VERTEX_BUFFER_SIZE +
+ vertex_cache_t::VERTEX_CACHE_SIZE - 1);
+ do {
+ v0 = c->vc.vBuffer + 0;
+ v = c->vc.vBuffer + 1;
+ GLsizei num = count > vcs ? vcs : count;
+ c->arrays.compileElements(c, v, first, num);
+ first += num;
+ count -= num;
+ if (!c->arrays.cull) {
+ // quick/trivial reject of the whole batch
+ do {
+ v1 = v++;
+ const uint32_t cc = v0->flags & v1->flags;
+ if (ggl_likely(!(cc & vertex_t::CLIP_ALL)))
+ c->prims.renderLine(c, v0, v1);
+ v0 = v1;
+ num--;
+ } while (num);
+ }
+ // copy back the last processed vertex
+ c->vc.vBuffer[0] = *v0;
+ c->arrays.cull = v0->flags & vertex_t::CLIP_ALL;
+ } while (count);
+}
+
+void drawPrimitivesLineLoop(ogles_context_t* c, GLint first, GLsizei count)
+{
+ if (ggl_unlikely(count < 2))
+ return;
+ drawPrimitivesLineStrip(c, first, count);
+ if (ggl_likely(count >= 3)) {
+ vertex_t* v0 = c->vc.vBuffer;
+ vertex_t* v1 = c->vc.vBuffer + 1;
+ c->arrays.compileElement(c, v1, first);
+ const uint32_t cc = v0->flags & v1->flags;
+ if (ggl_likely(!(cc & vertex_t::CLIP_ALL)))
+ c->prims.renderLine(c, v0, v1);
+ }
+}
+
+void drawPrimitivesLines(ogles_context_t* c, GLint first, GLsizei count)
+{
+ if (ggl_unlikely(count < 2))
+ return;
+
+ // vertex cache size must be multiple of 2
+ const GLsizei vcs =
+ ((vertex_cache_t::VERTEX_BUFFER_SIZE +
+ vertex_cache_t::VERTEX_CACHE_SIZE) / 2) * 2;
+ do {
+ vertex_t* v = c->vc.vBuffer;
+ GLsizei num = count > vcs ? vcs : count;
+ c->arrays.cull = vertex_t::CLIP_ALL;
+ c->arrays.compileElements(c, v, first, num);
+ first += num;
+ count -= num;
+ if (!c->arrays.cull) {
+ // quick/trivial reject of the whole batch
+ num -= 2;
+ do {
+ const uint32_t cc = v[0].flags & v[1].flags;
+ if (ggl_likely(!(cc & vertex_t::CLIP_ALL)))
+ c->prims.renderLine(c, v, v+1);
+ v += 2;
+ num -= 2;
+ } while (num >= 0);
+ }
+ } while (count >= 2);
+}
+
+// ----------------------------------------------------------------------------
+
+static void drawPrimitivesTriangleFanOrStrip(ogles_context_t* c,
+ GLint first, GLsizei count, int winding)
+{
+ // winding == 2 : fan
+ // winding == 1 : strip
+
+ if (ggl_unlikely(count < 3))
+ return;
+
+ vertex_t *v, *v0, *v1, *v2;
+ c->arrays.cull = vertex_t::CLIP_ALL;
+ c->arrays.compileElements(c, c->vc.vBuffer, first, 2);
+ first += 2;
+ count -= 2;
+
+ // vertex cache size must be multiple of 2. This is extremely important
+ // because it allows us to preserve the same winding when the whole
+ // batch is culled. We also need 2 extra vertices in the array, because
+ // we always keep the two first ones.
+ const GLsizei vcs =
+ ((vertex_cache_t::VERTEX_BUFFER_SIZE +
+ vertex_cache_t::VERTEX_CACHE_SIZE - 2) / 2) * 2;
+ do {
+ v0 = c->vc.vBuffer + 0;
+ v1 = c->vc.vBuffer + 1;
+ v = c->vc.vBuffer + 2;
+ GLsizei num = count > vcs ? vcs : count;
+ c->arrays.compileElements(c, v, first, num);
+ first += num;
+ count -= num;
+ if (!c->arrays.cull) {
+ // quick/trivial reject of the whole batch
+ do {
+ v2 = v++;
+ const uint32_t cc = v0->flags & v1->flags & v2->flags;
+ if (ggl_likely(!(cc & vertex_t::CLIP_ALL)))
+ c->prims.renderTriangle(c, v0, v1, v2);
+ swap(((winding^=1) ? v1 : v0), v2);
+ num--;
+ } while (num);
+ }
+ if (count) {
+ v0 = c->vc.vBuffer + 2 + num - 2;
+ v1 = c->vc.vBuffer + 2 + num - 1;
+ if ((winding&2) == 0) {
+ // for strips copy back the two last compiled vertices
+ c->vc.vBuffer[0] = *v0;
+ }
+ c->vc.vBuffer[1] = *v1;
+ c->arrays.cull = v0->flags & v1->flags & vertex_t::CLIP_ALL;
+ }
+ } while (count > 0);
+}
+
+void drawPrimitivesTriangleStrip(ogles_context_t* c,
+ GLint first, GLsizei count) {
+ drawPrimitivesTriangleFanOrStrip(c, first, count, 1);
+}
+
+void drawPrimitivesTriangleFan(ogles_context_t* c,
+ GLint first, GLsizei count) {
+ drawPrimitivesTriangleFanOrStrip(c, first, count, 2);
+}
+
+void drawPrimitivesTriangles(ogles_context_t* c, GLint first, GLsizei count)
+{
+ if (ggl_unlikely(count < 3))
+ return;
+
+ // vertex cache size must be multiple of 3
+ const GLsizei vcs =
+ ((vertex_cache_t::VERTEX_BUFFER_SIZE +
+ vertex_cache_t::VERTEX_CACHE_SIZE) / 3) * 3;
+ do {
+ vertex_t* v = c->vc.vBuffer;
+ GLsizei num = count > vcs ? vcs : count;
+ c->arrays.cull = vertex_t::CLIP_ALL;
+ c->arrays.compileElements(c, v, first, num);
+ first += num;
+ count -= num;
+ if (!c->arrays.cull) {
+ // quick/trivial reject of the whole batch
+ num -= 3;
+ do {
+ const uint32_t cc = v[0].flags & v[1].flags & v[2].flags;
+ if (ggl_likely(!(cc & vertex_t::CLIP_ALL)))
+ c->prims.renderTriangle(c, v, v+1, v+2);
+ v += 3;
+ num -= 3;
+ } while (num >= 0);
+ }
+ } while (count >= 3);
+}
+
+// ----------------------------------------------------------------------------
+#if 0
+#pragma mark -
+#endif
+
+// this looks goofy, but gcc does a great job with this...
+static inline unsigned int read_index(int type, const GLvoid*& p) {
+ unsigned int r;
+ if (type) {
+ r = *(const GLubyte*)p;
+ p = (const GLubyte*)p + 1;
+ } else {
+ r = *(const GLushort*)p;
+ p = (const GLushort*)p + 1;
+ }
+ return r;
+}
+
+// ----------------------------------------------------------------------------
+
+void drawIndexedPrimitivesPoints(ogles_context_t* c,
+ GLsizei count, const GLvoid *indices)
+{
+ if (ggl_unlikely(count < 1))
+ return;
+ const int type = (c->arrays.indicesType == GL_UNSIGNED_BYTE);
+ do {
+ vertex_t * v = fetch_vertex(c, read_index(type, indices));
+ if (ggl_likely(!(v->flags & vertex_t::CLIP_ALL)))
+ c->prims.renderPoint(c, v);
+ v->locked = 0;
+ count--;
+ } while(count);
+}
+
+// ----------------------------------------------------------------------------
+
+void drawIndexedPrimitivesLineStrip(ogles_context_t* c,
+ GLsizei count, const GLvoid *indices)
+{
+ if (ggl_unlikely(count < 2))
+ return;
+
+ vertex_t * const v = c->vc.vBuffer;
+ vertex_t* v0 = v;
+ vertex_t* v1;
+
+ const int type = (c->arrays.indicesType == GL_UNSIGNED_BYTE);
+ c->arrays.compileElement(c, v0, read_index(type, indices));
+ count -= 1;
+ do {
+ v1 = fetch_vertex(c, read_index(type, indices));
+ const uint32_t cc = v0->flags & v1->flags;
+ if (ggl_likely(!(cc & vertex_t::CLIP_ALL)))
+ c->prims.renderLine(c, v0, v1);
+ v0->locked = 0;
+ v0 = v1;
+ count--;
+ } while (count);
+ v1->locked = 0;
+}
+
+void drawIndexedPrimitivesLineLoop(ogles_context_t* c,
+ GLsizei count, const GLvoid *indices)
+{
+ if (ggl_unlikely(count <= 2)) {
+ drawIndexedPrimitivesLines(c, count, indices);
+ return;
+ }
+
+ vertex_t * const v = c->vc.vBuffer;
+ vertex_t* v0 = v;
+ vertex_t* v1;
+
+ const int type = (c->arrays.indicesType == GL_UNSIGNED_BYTE);
+ c->arrays.compileElement(c, v0, read_index(type, indices));
+ count -= 1;
+ do {
+ v1 = fetch_vertex(c, read_index(type, indices));
+ const uint32_t cc = v0->flags & v1->flags;
+ if (ggl_likely(!(cc & vertex_t::CLIP_ALL)))
+ c->prims.renderLine(c, v0, v1);
+ v0->locked = 0;
+ v0 = v1;
+ count--;
+ } while (count);
+ v1->locked = 0;
+
+ v1 = c->vc.vBuffer;
+ const uint32_t cc = v0->flags & v1->flags;
+ if (ggl_likely(!(cc & vertex_t::CLIP_ALL)))
+ c->prims.renderLine(c, v0, v1);
+}
+
+void drawIndexedPrimitivesLines(ogles_context_t* c,
+ GLsizei count, const GLvoid *indices)
+{
+ if (ggl_unlikely(count < 2))
+ return;
+
+ count -= 2;
+ const int type = (c->arrays.indicesType == GL_UNSIGNED_BYTE);
+ do {
+ vertex_t* const v0 = fetch_vertex(c, read_index(type, indices));
+ vertex_t* const v1 = fetch_vertex(c, read_index(type, indices));
+ const uint32_t cc = v0->flags & v1->flags;
+ if (ggl_likely(!(cc & vertex_t::CLIP_ALL)))
+ c->prims.renderLine(c, v0, v1);
+ v0->locked = 0;
+ v1->locked = 0;
+ count -= 2;
+ } while (count >= 0);
+}
+
+// ----------------------------------------------------------------------------
+
+static void drawIndexedPrimitivesTriangleFanOrStrip(ogles_context_t* c,
+ GLsizei count, const GLvoid *indices, int winding)
+{
+ // winding == 2 : fan
+ // winding == 1 : strip
+
+ if (ggl_unlikely(count < 3))
+ return;
+
+ vertex_t * const v = c->vc.vBuffer;
+ vertex_t* v0 = v;
+ vertex_t* v1 = v+1;
+ vertex_t* v2;
+
+ const int type = (c->arrays.indicesType == GL_UNSIGNED_BYTE);
+ c->arrays.compileElement(c, v0, read_index(type, indices));
+ c->arrays.compileElement(c, v1, read_index(type, indices));
+ count -= 2;
+
+ // note: GCC 4.1.1 here makes a prety interesting optimization
+ // where it duplicates the loop below based on c->arrays.indicesType
+
+ do {
+ v2 = fetch_vertex(c, read_index(type, indices));
+ const uint32_t cc = v0->flags & v1->flags & v2->flags;
+ if (ggl_likely(!(cc & vertex_t::CLIP_ALL)))
+ c->prims.renderTriangle(c, v0, v1, v2);
+ vertex_t* & consumed = ((winding^=1) ? v1 : v0);
+ consumed->locked = 0;
+ consumed = v2;
+ count--;
+ } while (count);
+ v0->locked = v1->locked = 0;
+ v2->locked = 0;
+}
+
+void drawIndexedPrimitivesTriangleStrip(ogles_context_t* c,
+ GLsizei count, const GLvoid *indices) {
+ drawIndexedPrimitivesTriangleFanOrStrip(c, count, indices, 1);
+}
+
+void drawIndexedPrimitivesTriangleFan(ogles_context_t* c,
+ GLsizei count, const GLvoid *indices) {
+ drawIndexedPrimitivesTriangleFanOrStrip(c, count, indices, 2);
+}
+
+void drawIndexedPrimitivesTriangles(ogles_context_t* c,
+ GLsizei count, const GLvoid *indices)
+{
+ if (ggl_unlikely(count < 3))
+ return;
+
+ count -= 3;
+ if (ggl_likely(c->arrays.indicesType == GL_UNSIGNED_SHORT)) {
+ // This case is probably our most common case...
+ uint16_t const * p = (uint16_t const *)indices;
+ do {
+ vertex_t* const v0 = fetch_vertex(c, *p++);
+ vertex_t* const v1 = fetch_vertex(c, *p++);
+ vertex_t* const v2 = fetch_vertex(c, *p++);
+ const uint32_t cc = v0->flags & v1->flags & v2->flags;
+ if (ggl_likely(!(cc & vertex_t::CLIP_ALL)))
+ c->prims.renderTriangle(c, v0, v1, v2);
+ v0->locked = 0;
+ v1->locked = 0;
+ v2->locked = 0;
+ count -= 3;
+ } while (count >= 0);
+ } else {
+ uint8_t const * p = (uint8_t const *)indices;
+ do {
+ vertex_t* const v0 = fetch_vertex(c, *p++);
+ vertex_t* const v1 = fetch_vertex(c, *p++);
+ vertex_t* const v2 = fetch_vertex(c, *p++);
+ const uint32_t cc = v0->flags & v1->flags & v2->flags;
+ if (ggl_likely(!(cc & vertex_t::CLIP_ALL)))
+ c->prims.renderTriangle(c, v0, v1, v2);
+ v0->locked = 0;
+ v1->locked = 0;
+ v2->locked = 0;
+ count -= 3;
+ } while (count >= 0);
+ }
+}
+
+// ----------------------------------------------------------------------------
+#if 0
+#pragma mark -
+#pragma mark Array compilers
+#endif
+
+void compileElement__generic(ogles_context_t* c,
+ vertex_t* v, GLint first)
+{
+ v->flags = 0;
+ v->index = first;
+ first &= vertex_cache_t::INDEX_MASK;
+ const GLubyte* vp = c->arrays.vertex.element(first);
+ c->arrays.vertex.fetch(c, v->obj.v, vp);
+ c->arrays.mvp_transform(&c->transforms.mvp, &v->clip, &v->obj);
+ c->arrays.perspective(c, v);
+}
+
+void compileElements__generic(ogles_context_t* c,
+ vertex_t* v, GLint first, GLsizei count)
+{
+ const GLubyte* vp = c->arrays.vertex.element(
+ first & vertex_cache_t::INDEX_MASK);
+ const size_t stride = c->arrays.vertex.stride;
+ transform_t const* const mvp = &c->transforms.mvp;
+ do {
+ v->flags = 0;
+ v->index = first++;
+ c->arrays.vertex.fetch(c, v->obj.v, vp);
+ c->arrays.mvp_transform(mvp, &v->clip, &v->obj);
+ c->arrays.perspective(c, v);
+ vp += stride;
+ v++;
+ } while (--count);
+}
+
+/*
+void compileElements__3x_full(ogles_context_t* c,
+ vertex_t* v, GLint first, GLsizei count)
+{
+ const GLfixed* vp = (const GLfixed*)c->arrays.vertex.element(first);
+ const size_t stride = c->arrays.vertex.stride / 4;
+// const GLfixed* const& m = c->transforms.mvp.matrix.m;
+
+ GLfixed m[16];
+ memcpy(&m, c->transforms.mvp.matrix.m, sizeof(m));
+
+ do {
+ const GLfixed rx = vp[0];
+ const GLfixed ry = vp[1];
+ const GLfixed rz = vp[2];
+ vp += stride;
+ v->index = first++;
+ v->clip.x = mla3a(rx, m[ 0], ry, m[ 4], rz, m[ 8], m[12]);
+ v->clip.y = mla3a(rx, m[ 1], ry, m[ 5], rz, m[ 9], m[13]);
+ v->clip.z = mla3a(rx, m[ 2], ry, m[ 6], rz, m[10], m[14]);
+ v->clip.w = mla3a(rx, m[ 3], ry, m[ 7], rz, m[11], m[15]);
+
+ const GLfixed w = v->clip.w;
+ uint32_t clip = 0;
+ if (v->clip.x < -w) clip |= vertex_t::CLIP_L;
+ if (v->clip.x > w) clip |= vertex_t::CLIP_R;
+ if (v->clip.y < -w) clip |= vertex_t::CLIP_B;
+ if (v->clip.y > w) clip |= vertex_t::CLIP_T;
+ if (v->clip.z < -w) clip |= vertex_t::CLIP_N;
+ if (v->clip.z > w) clip |= vertex_t::CLIP_F;
+ v->flags = clip;
+ c->arrays.cull &= clip;
+
+ //c->arrays.perspective(c, v);
+ v++;
+ } while (--count);
+}
+*/
+
+// ----------------------------------------------------------------------------
+#if 0
+#pragma mark -
+#pragma mark clippers
+#endif
+
+static void clipVec4(vec4_t& nv,
+ GLfixed t, const vec4_t& s, const vec4_t& p)
+{
+ for (int i=0; i<4 ; i++)
+ nv.v[i] = gglMulAddx(t, s.v[i] - p.v[i], p.v[i], 28);
+}
+
+static void clipVertex(ogles_context_t* c, vertex_t* nv,
+ GLfixed t, const vertex_t* s, const vertex_t* p)
+{
+ clipVec4(nv->clip, t, s->clip, p->clip);
+ nv->fog = gglMulAddx(t, s->fog - p->fog, p->fog, 28);
+ ogles_vertex_project(c, nv);
+ nv->flags |= vertex_t::LIT | vertex_t::EYE | vertex_t::TT;
+ nv->flags &= ~vertex_t::CLIP_ALL;
+}
+
+static void clipVertexC(ogles_context_t* c, vertex_t* nv,
+ GLfixed t, const vertex_t* s, const vertex_t* p)
+{
+ clipVec4(nv->color, t, s->color, p->color);
+ clipVertex(c, nv, t, s, p);
+}
+
+static void clipVertexT(ogles_context_t* c, vertex_t* nv,
+ GLfixed t, const vertex_t* s, const vertex_t* p)
+{
+ for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; i++) {
+ if (c->rasterizer.state.texture[i].enable)
+ clipVec4(nv->texture[i], t, s->texture[i], p->texture[i]);
+ }
+ clipVertex(c, nv, t, s, p);
+}
+
+static void clipVertexAll(ogles_context_t* c, vertex_t* nv,
+ GLfixed t, const vertex_t* s, const vertex_t* p)
+{
+ clipVec4(nv->color, t, s->color, p->color);
+ clipVertexT(c, nv, t, s, p);
+}
+
+static void clipEye(ogles_context_t* c, vertex_t* nv,
+ GLfixed t, const vertex_t* s, const vertex_t* p)
+{
+ nv->clear();
+ c->arrays.clipVertex(c, nv, t, p, s);
+ clipVec4(nv->eye, t, s->eye, p->eye);
+}
+
+// ----------------------------------------------------------------------------
+#if 0
+#pragma mark -
+#endif
+
+void validate_arrays(ogles_context_t* c, GLenum mode)
+{
+ uint32_t enables = c->rasterizer.state.enables;
+
+ // Perspective correction is not need if Ortho transform, but
+ // the user can still provide the w coordinate manually, so we can't
+ // automatically turn it off (in fact we could when the 4th coordinate
+ // is not spcified in the vertex array).
+ // W interpolation is never needed for points.
+ GLboolean perspective =
+ c->perspective && mode!=GL_POINTS && (enables & GGL_ENABLE_TMUS);
+ c->rasterizer.procs.enableDisable(c, GGL_W_LERP, perspective);
+
+ // set anti-aliasing
+ GLboolean smooth = GL_FALSE;
+ switch (mode) {
+ case GL_POINTS:
+ smooth = c->point.smooth;
+ break;
+ case GL_LINES:
+ case GL_LINE_LOOP:
+ case GL_LINE_STRIP:
+ smooth = c->line.smooth;
+ break;
+ }
+ if (((enables & GGL_ENABLE_AA)?1:0) != smooth)
+ c->rasterizer.procs.enableDisable(c, GGL_AA, smooth);
+
+ // set the shade model for this primitive
+ c->rasterizer.procs.shadeModel(c,
+ (mode == GL_POINTS) ? GL_FLAT : c->lighting.shadeModel);
+
+ // compute all the matrices we'll need...
+ uint32_t want =
+ transform_state_t::MVP |
+ transform_state_t::VIEWPORT;
+ if (c->lighting.enable) { // needs normal transforms and eye coords
+ want |= transform_state_t::MVUI;
+ want |= transform_state_t::MODELVIEW;
+ }
+ if (enables & GGL_ENABLE_TMUS) { // needs texture transforms
+ want |= transform_state_t::TEXTURE;
+ }
+ if (c->clipPlanes.enable) { // needs eye coords
+ want |= transform_state_t::MODELVIEW;
+ }
+ ogles_validate_transform(c, want);
+
+ // textures...
+ if (enables & GGL_ENABLE_TMUS)
+ ogles_validate_texture(c);
+
+ // vertex compilers
+ c->arrays.compileElement = compileElement__generic;
+ c->arrays.compileElements = compileElements__generic;
+
+ // vertex transform
+ c->arrays.mvp_transform =
+ c->transforms.mvp.pointv[c->arrays.vertex.size - 2];
+
+ c->arrays.mv_transform =
+ c->transforms.modelview.transform.pointv[c->arrays.vertex.size - 2];
+
+ /*
+ * ***********************************************************************
+ * pick fetchers
+ * ***********************************************************************
+ */
+
+ array_machine_t& am = c->arrays;
+ am.vertex.fetch = fetchNop;
+ am.normal.fetch = currentNormal;
+ am.color.fetch = currentColor;
+
+ if (am.vertex.enable) {
+ am.vertex.resolve();
+ if (am.vertex.bo || am.vertex.pointer) {
+ am.vertex.fetch = vertex_fct[am.vertex.size-2][am.vertex.type & 0xF];
+ }
+ }
+
+ if (am.normal.enable) {
+ am.normal.resolve();
+ if (am.normal.bo || am.normal.pointer) {
+ am.normal.fetch = normal_fct[am.normal.size-3][am.normal.type & 0xF];
+ }
+ }
+
+ if (am.color.enable) {
+ am.color.resolve();
+ if (c->lighting.enable) {
+ if (am.color.bo || am.color.pointer) {
+ am.color.fetch = color_fct[am.color.size-3][am.color.type & 0xF];
+ }
+ } else {
+ if (am.color.bo || am.color.pointer) {
+ am.color.fetch = color_clamp_fct[am.color.size-3][am.color.type & 0xF];
+ }
+ }
+ }
+
+ int activeTmuCount = 0;
+ for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; i++) {
+ am.texture[i].fetch = currentTexCoord;
+ if (c->rasterizer.state.texture[i].enable) {
+
+ // texture fetchers...
+ if (am.texture[i].enable) {
+ am.texture[i].resolve();
+ if (am.texture[i].bo || am.texture[i].pointer) {
+ am.texture[i].fetch = texture_fct[am.texture[i].size-2][am.texture[i].type & 0xF];
+ }
+ }
+
+ // texture transform...
+ const int index = c->arrays.texture[i].size - 2;
+ c->arrays.tex_transform[i] =
+ c->transforms.texture[i].transform.pointv[index];
+
+ am.tmu = i;
+ activeTmuCount++;
+ }
+ }
+
+ // pick the vertex-clipper
+ uint32_t clipper = 0;
+ // we must reload 'enables' here
+ enables = c->rasterizer.state.enables;
+ if (enables & GGL_ENABLE_SMOOTH)
+ clipper |= 1; // we need to interpolate colors
+ if (enables & GGL_ENABLE_TMUS)
+ clipper |= 2; // we need to interpolate textures
+ switch (clipper) {
+ case 0: c->arrays.clipVertex = clipVertex; break;
+ case 1: c->arrays.clipVertex = clipVertexC; break;
+ case 2: c->arrays.clipVertex = clipVertexT; break;
+ case 3: c->arrays.clipVertex = clipVertexAll; break;
+ }
+ c->arrays.clipEye = clipEye;
+
+ // pick the primitive rasterizer
+ ogles_validate_primitives(c);
+}
+
+// ----------------------------------------------------------------------------
+}; // namespace android
+// ----------------------------------------------------------------------------
+
+using namespace android;
+
+#if 0
+#pragma mark -
+#pragma mark array API
+#endif
+
+void glVertexPointer(
+ GLint size, GLenum type, GLsizei stride, const GLvoid *pointer)
+{
+ ogles_context_t* c = ogles_context_t::get();
+ if (size<2 || size>4 || stride<0) {
+ ogles_error(c, GL_INVALID_VALUE);
+ return;
+ }
+ switch (type) {
+ case GL_BYTE:
+ case GL_SHORT:
+ case GL_FIXED:
+ case GL_FLOAT:
+ break;
+ default:
+ ogles_error(c, GL_INVALID_ENUM);
+ return;
+ }
+ c->arrays.vertex.init(size, type, stride, pointer, c->arrays.array_buffer, 0);
+}
+
+void glColorPointer(
+ GLint size, GLenum type, GLsizei stride, const GLvoid *pointer)
+{
+ ogles_context_t* c = ogles_context_t::get();
+ // in theory ogles doesn't allow color arrays of size 3
+ // but it is very useful to 'visualize' the normal array.
+ if (size<3 || size>4 || stride<0) {
+ ogles_error(c, GL_INVALID_VALUE);
+ return;
+ }
+ switch (type) {
+ case GL_UNSIGNED_BYTE:
+ case GL_FIXED:
+ case GL_FLOAT:
+ break;
+ default:
+ ogles_error(c, GL_INVALID_ENUM);
+ return;
+ }
+ c->arrays.color.init(size, type, stride, pointer, c->arrays.array_buffer, 0);
+}
+
+void glNormalPointer(
+ GLenum type, GLsizei stride, const GLvoid *pointer)
+{
+ ogles_context_t* c = ogles_context_t::get();
+ if (stride<0) {
+ ogles_error(c, GL_INVALID_VALUE);
+ return;
+ }
+ switch (type) {
+ case GL_BYTE:
+ case GL_SHORT:
+ case GL_FIXED:
+ case GL_FLOAT:
+ break;
+ default:
+ ogles_error(c, GL_INVALID_ENUM);
+ return;
+ }
+ c->arrays.normal.init(3, type, stride, pointer, c->arrays.array_buffer, 0);
+}
+
+void glTexCoordPointer(
+ GLint size, GLenum type, GLsizei stride, const GLvoid *pointer)
+{
+ ogles_context_t* c = ogles_context_t::get();
+ if (size<2 || size>4 || stride<0) {
+ ogles_error(c, GL_INVALID_VALUE);
+ return;
+ }
+ switch (type) {
+ case GL_BYTE:
+ case GL_SHORT:
+ case GL_FIXED:
+ case GL_FLOAT:
+ break;
+ default:
+ ogles_error(c, GL_INVALID_ENUM);
+ return;
+ }
+ const int tmu = c->arrays.activeTexture;
+ c->arrays.texture[tmu].init(size, type, stride, pointer,
+ c->arrays.array_buffer, 0);
+}
+
+
+void glEnableClientState(GLenum array) {
+ ogles_context_t* c = ogles_context_t::get();
+ enableDisableClientState(c, array, true);
+}
+
+void glDisableClientState(GLenum array) {
+ ogles_context_t* c = ogles_context_t::get();
+ enableDisableClientState(c, array, false);
+}
+
+void glClientActiveTexture(GLenum texture)
+{
+ ogles_context_t* c = ogles_context_t::get();
+ if (texture<GL_TEXTURE0 || texture>=GL_TEXTURE0+GGL_TEXTURE_UNIT_COUNT) {
+ ogles_error(c, GL_INVALID_ENUM);
+ return;
+ }
+ c->arrays.activeTexture = texture - GL_TEXTURE0;
+}
+
+void glDrawArrays(GLenum mode, GLint first, GLsizei count)
+{
+ ogles_context_t* c = ogles_context_t::get();
+ if (count<0) {
+ ogles_error(c, GL_INVALID_VALUE);
+ return;
+ }
+ switch (mode) {
+ case GL_POINTS:
+ case GL_LINE_STRIP:
+ case GL_LINE_LOOP:
+ case GL_LINES:
+ case GL_TRIANGLE_STRIP:
+ case GL_TRIANGLE_FAN:
+ case GL_TRIANGLES:
+ break;
+ default:
+ ogles_error(c, GL_INVALID_ENUM);
+ return;
+ }
+
+ if (count == 0 || !c->arrays.vertex.enable)
+ return;
+ if ((c->cull.enable) && (c->cull.cullFace == GL_FRONT_AND_BACK))
+ return; // all triangles are culled
+
+ validate_arrays(c, mode);
+ drawArraysPrims[mode](c, first, count);
+
+#if VC_CACHE_STATISTICS
+ c->vc.total = count;
+ c->vc.dump_stats(mode);
+#endif
+}
+
+void glDrawElements(
+ GLenum mode, GLsizei count, GLenum type, const GLvoid *indices)
+{
+ ogles_context_t* c = ogles_context_t::get();
+ if (count<0) {
+ ogles_error(c, GL_INVALID_VALUE);
+ return;
+ }
+ switch (mode) {
+ case GL_POINTS:
+ case GL_LINE_STRIP:
+ case GL_LINE_LOOP:
+ case GL_LINES:
+ case GL_TRIANGLE_STRIP:
+ case GL_TRIANGLE_FAN:
+ case GL_TRIANGLES:
+ break;
+ default:
+ ogles_error(c, GL_INVALID_ENUM);
+ return;
+ }
+ switch (type) {
+ case GL_UNSIGNED_BYTE:
+ case GL_UNSIGNED_SHORT:
+ c->arrays.indicesType = type;
+ break;
+ default:
+ ogles_error(c, GL_INVALID_ENUM);
+ return;
+ }
+ if (count == 0 || !c->arrays.vertex.enable)
+ return;
+ if ((c->cull.enable) && (c->cull.cullFace == GL_FRONT_AND_BACK))
+ return; // all triangles are culled
+
+ // clear the vertex-cache
+ c->vc.clear();
+ validate_arrays(c, mode);
+
+ // if indices are in a buffer object, the pointer is treated as an
+ // offset in that buffer.
+ if (c->arrays.element_array_buffer) {
+ indices = c->arrays.element_array_buffer->data + uintptr_t(indices);
+ }
+
+ drawElementsPrims[mode](c, count, indices);
+
+#if VC_CACHE_STATISTICS
+ c->vc.total = count;
+ c->vc.dump_stats(mode);
+#endif
+}
+
+// ----------------------------------------------------------------------------
+// buffers
+// ----------------------------------------------------------------------------
+
+void glBindBuffer(GLenum target, GLuint buffer)
+{
+ ogles_context_t* c = ogles_context_t::get();
+ if ((target!=GL_ARRAY_BUFFER) && (target!=GL_ELEMENT_ARRAY_BUFFER)) {
+ ogles_error(c, GL_INVALID_ENUM);
+ return;
+ }
+ // create a buffer object, or bind an existing one
+ buffer_t const* bo = 0;
+ if (buffer) {
+ bo = c->bufferObjectManager->bind(buffer);
+ if (!bo) {
+ ogles_error(c, GL_OUT_OF_MEMORY);
+ return;
+ }
+ }
+ ((target == GL_ARRAY_BUFFER) ?
+ c->arrays.array_buffer : c->arrays.element_array_buffer) = bo;
+}
+
+void glBufferData(GLenum target, GLsizeiptr size, const GLvoid* data, GLenum usage)
+{
+ ogles_context_t* c = ogles_context_t::get();
+ if ((target!=GL_ARRAY_BUFFER) && (target!=GL_ELEMENT_ARRAY_BUFFER)) {
+ ogles_error(c, GL_INVALID_ENUM);
+ return;
+ }
+ if (size<0) {
+ ogles_error(c, GL_INVALID_VALUE);
+ return;
+ }
+ if ((usage!=GL_STATIC_DRAW) && (usage!=GL_DYNAMIC_DRAW)) {
+ ogles_error(c, GL_INVALID_ENUM);
+ return;
+ }
+ buffer_t const* bo = ((target == GL_ARRAY_BUFFER) ?
+ c->arrays.array_buffer : c->arrays.element_array_buffer);
+
+ if (bo == 0) {
+ // can't modify buffer 0
+ ogles_error(c, GL_INVALID_OPERATION);
+ return;
+ }
+
+ buffer_t* edit_bo = const_cast<buffer_t*>(bo);
+ if (c->bufferObjectManager->allocateStore(edit_bo, size, usage) != 0) {
+ ogles_error(c, GL_OUT_OF_MEMORY);
+ return;
+ }
+ if (data) {
+ memcpy(bo->data, data, size);
+ }
+}
+
+void glBufferSubData(GLenum target, GLintptr offset, GLsizeiptr size, const GLvoid* data)
+{
+ ogles_context_t* c = ogles_context_t::get();
+ if ((target!=GL_ARRAY_BUFFER) && (target!=GL_ELEMENT_ARRAY_BUFFER)) {
+ ogles_error(c, GL_INVALID_ENUM);
+ return;
+ }
+ if (offset<0 || size<0 || data==0) {
+ ogles_error(c, GL_INVALID_VALUE);
+ return;
+ }
+ buffer_t const* bo = ((target == GL_ARRAY_BUFFER) ?
+ c->arrays.array_buffer : c->arrays.element_array_buffer);
+
+ if (bo == 0) {
+ // can't modify buffer 0
+ ogles_error(c, GL_INVALID_OPERATION);
+ return;
+ }
+ if (offset+size > bo->size) {
+ ogles_error(c, GL_INVALID_VALUE);
+ return;
+ }
+ memcpy(bo->data + offset, data, size);
+}
+
+void glDeleteBuffers(GLsizei n, const GLuint* buffers)
+{
+ ogles_context_t* c = ogles_context_t::get();
+ if (n<0) {
+ ogles_error(c, GL_INVALID_VALUE);
+ return;
+ }
+
+ for (int i=0 ; i<n ; i++) {
+ GLuint name = buffers[i];
+ if (name) {
+ // unbind bound deleted buffers...
+ if (c->arrays.element_array_buffer->name == name) {
+ c->arrays.element_array_buffer = 0;
+ }
+ if (c->arrays.array_buffer->name == name) {
+ c->arrays.array_buffer = 0;
+ }
+ if (c->arrays.vertex.bo->name == name) {
+ c->arrays.vertex.bo = 0;
+ }
+ if (c->arrays.normal.bo->name == name) {
+ c->arrays.normal.bo = 0;
+ }
+ if (c->arrays.color.bo->name == name) {
+ c->arrays.color.bo = 0;
+ }
+ for (int t=0 ; t<GGL_TEXTURE_UNIT_COUNT ; t++) {
+ if (c->arrays.texture[t].bo->name == name) {
+ c->arrays.texture[t].bo = 0;
+ }
+ }
+ }
+ }
+ c->bufferObjectManager->deleteBuffers(n, buffers);
+ c->bufferObjectManager->recycleTokens(n, buffers);
+}
+
+void glGenBuffers(GLsizei n, GLuint* buffers)
+{
+ ogles_context_t* c = ogles_context_t::get();
+ if (n<0) {
+ ogles_error(c, GL_INVALID_VALUE);
+ return;
+ }
+ c->bufferObjectManager->getToken(n, buffers);
+}