/* ** 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 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; (void)assertAlignedSize; // suppress unused warning. 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); } } #if VC_CACHE_STATISTICS void vertex_cache_t::dump_stats(GLenum mode) { 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); } #else void vertex_cache_t::dump_stats(GLenum /*mode*/) { } #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 + vcs - 2; v1 = c->vc.vBuffer + 2 + vcs - 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); v->obj.z = 0; v->obj.w = 0x10000; 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++; v->obj.z = 0; v->obj.w = 0x10000; 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 || (enables & GGL_ENABLE_FOG)) { want |= transform_state_t::MODELVIEW; // needs eye coords } 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(); if (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); const uint32_t enables = c->rasterizer.state.enables; if (enables & GGL_ENABLE_TMUS) ogles_lock_textures(c); drawArraysPrims[mode](c, first, count); if (enables & GGL_ENABLE_TMUS) ogles_unlock_textures(c); #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); } const uint32_t enables = c->rasterizer.state.enables; if (enables & GGL_ENABLE_TMUS) ogles_lock_textures(c); drawElementsPrims[mode](c, count, indices); if (enables & GGL_ENABLE_TMUS) ogles_unlock_textures(c); #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) { if (c->arrays.element_array_buffer->name == name) { c->arrays.element_array_buffer = 0; } } if (c->arrays.array_buffer) { if (c->arrays.array_buffer->name == name) { c->arrays.array_buffer = 0; } } if (c->arrays.vertex.bo) { if (c->arrays.vertex.bo->name == name) { c->arrays.vertex.bo = 0; } } if (c->arrays.normal.bo) { if (c->arrays.normal.bo->name == name) { c->arrays.normal.bo = 0; } } if (c->arrays.color.bo) { 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) { 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); }