From 874a2c0b7da62f4dd08dedcec221f55b22e40e95 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Tue, 5 Apr 2011 19:02:07 -0600 Subject: [PATCH] mesa: core support for GL_ARB_texture_buffer_object No GLSL or driver support yet. --- src/mesa/main/api_exec.c | 3 + src/mesa/main/bufferobj.c | 5 + src/mesa/main/context.c | 1 + src/mesa/main/get.c | 36 ++++ src/mesa/main/mtypes.h | 10 + src/mesa/main/shared.c | 2 + src/mesa/main/teximage.c | 282 ++++++++++++++++++++++++- src/mesa/main/teximage.h | 5 + src/mesa/main/texobj.c | 9 +- src/mesa/main/texstate.c | 3 +- src/mesa/program/program.c | 4 +- src/mesa/state_tracker/st_cb_texture.c | 3 + 12 files changed, 357 insertions(+), 6 deletions(-) diff --git a/src/mesa/main/api_exec.c b/src/mesa/main/api_exec.c index f7603705b72..91cdea5bb98 100644 --- a/src/mesa/main/api_exec.c +++ b/src/mesa/main/api_exec.c @@ -726,6 +726,9 @@ _mesa_create_exec_table(void) /* GL_NV_texture_barrier */ SET_TextureBarrierNV(exec, _mesa_TextureBarrierNV); + /* GL_ARB_texture_buffer_object */ + SET_TexBufferARB(exec, _mesa_TexBuffer); + return exec; } diff --git a/src/mesa/main/bufferobj.c b/src/mesa/main/bufferobj.c index c969a8da47d..78105883c97 100644 --- a/src/mesa/main/bufferobj.c +++ b/src/mesa/main/bufferobj.c @@ -93,6 +93,11 @@ get_buffer_target(struct gl_context *ctx, GLenum target) } break; #endif + case GL_TEXTURE_BUFFER: + if (ctx->Extensions.ARB_texture_buffer_object) { + return &ctx->Texture.BufferObject; + } + break; default: return NULL; } diff --git a/src/mesa/main/context.c b/src/mesa/main/context.c index ca74284ca89..9eb1eacba36 100644 --- a/src/mesa/main/context.c +++ b/src/mesa/main/context.c @@ -567,6 +567,7 @@ _mesa_init_constants(struct gl_context *ctx) ctx->Const.MaxTextureImageUnits); ctx->Const.MaxTextureMaxAnisotropy = MAX_TEXTURE_MAX_ANISOTROPY; ctx->Const.MaxTextureLodBias = MAX_TEXTURE_LOD_BIAS; + ctx->Const.MaxTextureBufferSize = 65536; ctx->Const.MaxArrayLockSize = MAX_ARRAY_LOCK_SIZE; ctx->Const.SubPixelBits = SUB_PIXEL_BITS; ctx->Const.MinPointSize = MIN_POINT_SIZE; diff --git a/src/mesa/main/get.c b/src/mesa/main/get.c index 9090ca661e3..6ef8c8792e6 100644 --- a/src/mesa/main/get.c +++ b/src/mesa/main/get.c @@ -323,6 +323,7 @@ EXTRA_EXT(ARB_vertex_buffer_object); EXTRA_EXT(ARB_geometry_shader4); EXTRA_EXT(ARB_copy_buffer); EXTRA_EXT(EXT_framebuffer_sRGB); +EXTRA_EXT(ARB_texture_buffer_object); static const int extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program[] = { @@ -1236,6 +1237,18 @@ static const struct value_desc values[] = { CONTEXT_INT(Const.MaxProgramTexelOffset), extra_EXT_gpu_shader4 }, + /* GL_ARB_texture_buffer_object */ + { GL_MAX_TEXTURE_BUFFER_SIZE_ARB, CONTEXT_INT(Const.MaxTextureBufferSize), + extra_ARB_texture_buffer_object }, + { GL_TEXTURE_BINDING_BUFFER_ARB, LOC_CUSTOM, TYPE_INT, 0, + extra_ARB_texture_buffer_object }, + { GL_TEXTURE_BUFFER_DATA_STORE_BINDING_ARB, LOC_CUSTOM, TYPE_INT, + TEXTURE_BUFFER_INDEX, extra_ARB_texture_buffer_object }, + { GL_TEXTURE_BUFFER_FORMAT_ARB, LOC_CUSTOM, TYPE_INT, 0, + extra_ARB_texture_buffer_object }, + { GL_TEXTURE_BUFFER_ARB, LOC_CUSTOM, TYPE_INT, 0, + extra_ARB_texture_buffer_object }, + /* GL 3.0 */ { GL_NUM_EXTENSIONS, LOC_CUSTOM, TYPE_INT, 0, extra_version_30 }, { GL_MAJOR_VERSION, CONTEXT_INT(VersionMajor), extra_version_30 }, @@ -1673,6 +1686,29 @@ find_custom_value(struct gl_context *ctx, const struct value_desc *d, union valu case GL_MAX_FRAGMENT_UNIFORM_VECTORS: v->value_int = ctx->Const.FragmentProgram.MaxUniformComponents / 4; break; + + /* GL_ARB_texture_buffer_object */ + case GL_TEXTURE_BUFFER_ARB: + v->value_int = ctx->Texture.BufferObject->Name; + break; + case GL_TEXTURE_BINDING_BUFFER_ARB: + unit = ctx->Texture.CurrentUnit; + v->value_int = + ctx->Texture.Unit[unit].CurrentTex[TEXTURE_BUFFER_INDEX]->Name; + break; + case GL_TEXTURE_BUFFER_DATA_STORE_BINDING_ARB: + { + struct gl_buffer_object *buf = + ctx->Texture.Unit[ctx->Texture.CurrentUnit] + .CurrentTex[TEXTURE_BUFFER_INDEX]->BufferObject; + v->value_int = buf ? buf->Name : 0; + } + break; + case GL_TEXTURE_BUFFER_FORMAT_ARB: + v->value_int = ctx->Texture.Unit[ctx->Texture.CurrentUnit] + .CurrentTex[TEXTURE_BUFFER_INDEX]->BufferObjectFormat; + break; + } } diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h index 02676006a9f..13e4325ee45 100644 --- a/src/mesa/main/mtypes.h +++ b/src/mesa/main/mtypes.h @@ -1139,6 +1139,7 @@ struct gl_stencil_attrib */ typedef enum { + TEXTURE_BUFFER_INDEX, TEXTURE_2D_ARRAY_INDEX, TEXTURE_1D_ARRAY_INDEX, TEXTURE_CUBE_INDEX, @@ -1155,6 +1156,7 @@ typedef enum * Used for Texture.Unit[]._ReallyEnabled flags. */ /*@{*/ +#define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX) #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX) #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX) #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX) @@ -1348,6 +1350,10 @@ struct gl_texture_object /** Actual texture images, indexed by [cube face] and [mipmap level] */ struct gl_texture_image *Image[MAX_FACES][MAX_TEXTURE_LEVELS]; + /** GL_ARB_texture_buffer_object */ + struct gl_buffer_object *BufferObject; + GLenum BufferObjectFormat; + /** GL_EXT_paletted_texture */ struct gl_color_table Palette; @@ -1458,6 +1464,9 @@ struct gl_texture_attrib struct gl_texture_object *ProxyTex[NUM_TEXTURE_TARGETS]; + /** GL_ARB_texture_buffer_object */ + struct gl_buffer_object *BufferObject; + /** GL_ARB_seamless_cubemap */ GLboolean CubeMapSeamless; @@ -2630,6 +2639,7 @@ struct gl_constants GLuint MaxTextureUnits; /**< = MIN(CoordUnits, ImageUnits) */ GLfloat MaxTextureMaxAnisotropy; /**< GL_EXT_texture_filter_anisotropic */ GLfloat MaxTextureLodBias; /**< GL_EXT_texture_lod_bias */ + GLuint MaxTextureBufferSize; /**< GL_ARB_texture_buffer_object */ GLuint MaxArrayLockSize; diff --git a/src/mesa/main/shared.c b/src/mesa/main/shared.c index ce9fc4de327..6604ed07d53 100644 --- a/src/mesa/main/shared.c +++ b/src/mesa/main/shared.c @@ -98,6 +98,7 @@ _mesa_alloc_shared_state(struct gl_context *ctx) for (i = 0; i < NUM_TEXTURE_TARGETS; i++) { /* NOTE: the order of these enums matches the TEXTURE_x_INDEX values */ static const GLenum targets[NUM_TEXTURE_TARGETS] = { + GL_TEXTURE_BUFFER, GL_TEXTURE_2D_ARRAY_EXT, GL_TEXTURE_1D_ARRAY_EXT, GL_TEXTURE_CUBE_MAP, @@ -106,6 +107,7 @@ _mesa_alloc_shared_state(struct gl_context *ctx) GL_TEXTURE_2D, GL_TEXTURE_1D }; + assert(Elements(targets) == NUM_TEXTURE_TARGETS); shared->DefaultTex[i] = ctx->Driver.NewTextureObject(ctx, 0, targets[i]); } diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c index 6161eb41456..c5c454336fa 100644 --- a/src/mesa/main/teximage.c +++ b/src/mesa/main/teximage.c @@ -681,8 +681,10 @@ _mesa_delete_texture_image(struct gl_context *ctx, GLboolean _mesa_is_proxy_texture(GLenum target) { - /* NUM_TEXTURE_TARGETS should match number of terms below */ - assert(NUM_TEXTURE_TARGETS == 7); + /* NUM_TEXTURE_TARGETS should match number of terms below, + * except there's no proxy for GL_TEXTURE_BUFFER. + */ + assert(NUM_TEXTURE_TARGETS == 8); return (target == GL_PROXY_TEXTURE_1D || target == GL_PROXY_TEXTURE_2D || @@ -794,6 +796,9 @@ _mesa_select_tex_object(struct gl_context *ctx, return arrayTex ? texUnit->CurrentTex[TEXTURE_2D_ARRAY_INDEX] : NULL; case GL_PROXY_TEXTURE_2D_ARRAY_EXT: return arrayTex ? ctx->Texture.ProxyTex[TEXTURE_2D_ARRAY_INDEX] : NULL; + case GL_TEXTURE_BUFFER: + return ctx->Extensions.ARB_texture_buffer_object + ? texUnit->CurrentTex[TEXTURE_BUFFER_INDEX] : NULL; default: _mesa_problem(NULL, "bad target in _mesa_select_tex_object()"); return NULL; @@ -981,6 +986,8 @@ _mesa_max_texture_levels(struct gl_context *ctx, GLenum target) return (ctx->Extensions.MESA_texture_array || ctx->Extensions.EXT_texture_array) ? ctx->Const.MaxTextureLevels : 0; + case GL_TEXTURE_BUFFER: + /* fall-through */ default: return 0; /* bad target */ } @@ -1017,6 +1024,8 @@ _mesa_get_texture_dimensions(GLenum target) case GL_TEXTURE_2D_ARRAY: case GL_PROXY_TEXTURE_2D_ARRAY: return 3; + case GL_TEXTURE_BUFFER: + /* fall-through */ default: _mesa_problem(NULL, "invalid target 0x%x in get_texture_dimensions()", target); @@ -3551,3 +3560,272 @@ _mesa_CompressedTexSubImage3DARB(GLenum target, GLint level, GLint xoffset, compressed_tex_sub_image(3, target, level, xoffset, yoffset, zoffset, width, height, depth, format, imageSize, data); } + + +/** + * Helper for glTexBuffer(). Check if internalFormat is legal. If so, + * return the basic data type and number of components for the format. + * \param return GL_TRUE if internalFormat is legal, GL_FALSE otherwise + */ +static GLboolean +get_sized_format_info(const struct gl_context *ctx, GLenum internalFormat, + GLenum *datatype, GLuint *components) +{ + switch (internalFormat) { + case GL_ALPHA8: + *datatype = GL_UNSIGNED_BYTE; + *components = 1; + break; + case GL_ALPHA16: + *datatype = GL_UNSIGNED_SHORT; + *components = 1; + break; + case GL_ALPHA16F_ARB: + *datatype = GL_HALF_FLOAT; + *components = 1; + break; + case GL_ALPHA32F_ARB: + *datatype = GL_FLOAT; + *components = 1; + break; + case GL_ALPHA8I_EXT: + *datatype = GL_BYTE; + *components = 1; + break; + case GL_ALPHA16I_EXT: + *datatype = GL_SHORT; + *components = 1; + break; + case GL_ALPHA32I_EXT: + *datatype = GL_INT; + *components = 1; + break; + case GL_ALPHA8UI_EXT: + *datatype = GL_UNSIGNED_BYTE; + *components = 1; + break; + case GL_ALPHA16UI_EXT: + *datatype = GL_UNSIGNED_SHORT; + *components = 1; + break; + case GL_ALPHA32UI_EXT: + *datatype = GL_UNSIGNED_INT; + *components = 1; + break; + case GL_LUMINANCE8: + *datatype = GL_UNSIGNED_BYTE; + *components = 1; + break; + case GL_LUMINANCE16: + *datatype = GL_UNSIGNED_SHORT; + *components = 1; + break; + case GL_LUMINANCE16F_ARB: + *datatype = GL_HALF_FLOAT; + *components = 1; + break; + case GL_LUMINANCE32F_ARB: + *datatype = GL_FLOAT; + *components = 1; + break; + case GL_LUMINANCE8I_EXT: + *datatype = GL_BYTE; + *components = 1; + break; + case GL_LUMINANCE16I_EXT: + *datatype = GL_SHORT; + *components = 1; + break; + case GL_LUMINANCE32I_EXT: + *datatype = GL_INT; + *components = 1; + break; + case GL_LUMINANCE8UI_EXT: + *datatype = GL_UNSIGNED_BYTE; + *components = 1; + break; + case GL_LUMINANCE16UI_EXT: + *datatype = GL_UNSIGNED_SHORT; + *components = 1; + break; + case GL_LUMINANCE32UI_EXT: + *datatype = GL_UNSIGNED_INT; + *components = 1; + break; + case GL_LUMINANCE8_ALPHA8: + *datatype = GL_UNSIGNED_BYTE; + *components = 2; + break; + case GL_LUMINANCE16_ALPHA16: + *datatype = GL_UNSIGNED_SHORT; + *components = 2; + break; + case GL_LUMINANCE_ALPHA16F_ARB: + *datatype = GL_HALF_FLOAT; + *components = 2; + break; + case GL_LUMINANCE_ALPHA32F_ARB: + *datatype = GL_FLOAT; + *components = 2; + break; + case GL_LUMINANCE_ALPHA8I_EXT: + *datatype = GL_BYTE; + *components = 2; + break; + case GL_LUMINANCE_ALPHA16I_EXT: + *datatype = GL_SHORT; + *components = 2; + break; + case GL_LUMINANCE_ALPHA32I_EXT: + *datatype = GL_INT; + *components = 2; + break; + case GL_LUMINANCE_ALPHA8UI_EXT: + *datatype = GL_UNSIGNED_BYTE; + *components = 2; + break; + case GL_LUMINANCE_ALPHA16UI_EXT: + *datatype = GL_UNSIGNED_SHORT; + *components = 2; + break; + case GL_LUMINANCE_ALPHA32UI_EXT: + *datatype = GL_UNSIGNED_INT; + *components = 2; + break; + case GL_INTENSITY8: + *datatype = GL_UNSIGNED_BYTE; + *components = 1; + break; + case GL_INTENSITY16: + *datatype = GL_UNSIGNED_SHORT; + *components = 1; + break; + case GL_INTENSITY16F_ARB: + *datatype = GL_HALF_FLOAT; + *components = 1; + break; + case GL_INTENSITY32F_ARB: + *datatype = GL_FLOAT; + *components = 1; + break; + case GL_INTENSITY8I_EXT: + *datatype = GL_BYTE; + *components = 1; + break; + case GL_INTENSITY16I_EXT: + *datatype = GL_SHORT; + *components = 1; + break; + case GL_INTENSITY32I_EXT: + *datatype = GL_INT; + *components = 1; + break; + case GL_INTENSITY8UI_EXT: + *datatype = GL_UNSIGNED_BYTE; + *components = 1; + break; + case GL_INTENSITY16UI_EXT: + *datatype = GL_UNSIGNED_SHORT; + *components = 1; + break; + case GL_INTENSITY32UI_EXT: + *datatype = GL_UNSIGNED_INT; + *components = 1; + break; + case GL_RGBA8: + *datatype = GL_UNSIGNED_BYTE; + *components = 4; + break; + case GL_RGBA16: + *datatype = GL_UNSIGNED_SHORT; + *components = 4; + break; + case GL_RGBA16F_ARB: + *datatype = GL_HALF_FLOAT; + *components = 4; + break; + case GL_RGBA32F_ARB: + *datatype = GL_FLOAT; + *components = 4; + break; + case GL_RGBA8I_EXT: + *datatype = GL_BYTE; + *components = 4; + break; + case GL_RGBA16I_EXT: + *datatype = GL_SHORT; + *components = 4; + break; + case GL_RGBA32I_EXT: + *datatype = GL_INT; + *components = 4; + break; + case GL_RGBA8UI_EXT: + *datatype = GL_UNSIGNED_BYTE; + *components = 4; + break; + case GL_RGBA16UI_EXT: + *datatype = GL_UNSIGNED_SHORT; + *components = 4; + break; + case GL_RGBA32UI_EXT: + *datatype = GL_UNSIGNED_INT; + *components = 4; + break; + default: + return GL_FALSE; + } + + if (*datatype == GL_FLOAT && !ctx->Extensions.ARB_texture_float) + return GL_FALSE; + + if (*datatype == GL_HALF_FLOAT && !ctx->Extensions.ARB_half_float_pixel) + return GL_FALSE; + + return GL_TRUE; +} + + +/** GL_ARB_texture_buffer_object */ +void GLAPIENTRY +_mesa_TexBuffer(GLenum target, GLenum internalFormat, GLuint buffer) +{ + struct gl_texture_object *texObj; + struct gl_buffer_object *bufObj; + GLenum dataType; + GLuint comps; + + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (!ctx->Extensions.ARB_texture_buffer_object) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glTexBuffer"); + return; + } + + if (target != GL_TEXTURE_BUFFER_ARB) { + _mesa_error(ctx, GL_INVALID_ENUM, "glTexBuffer(target)"); + return; + } + + if (!get_sized_format_info(ctx, internalFormat, &dataType, &comps)) { + _mesa_error(ctx, GL_INVALID_ENUM, "glTexBuffer(internalFormat 0x%x)", + internalFormat); + return; + } + + bufObj = _mesa_lookup_bufferobj(ctx, buffer); + if (buffer && !bufObj) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glTexBuffer(buffer %u)", buffer); + return; + } + + texObj = _mesa_get_current_tex_object(ctx, target); + + _mesa_lock_texture(ctx, texObj); + { + _mesa_reference_buffer_object(ctx, &texObj->BufferObject, bufObj); + texObj->BufferObjectFormat = internalFormat; + } + _mesa_unlock_texture(ctx, texObj); +} diff --git a/src/mesa/main/teximage.h b/src/mesa/main/teximage.h index 252d80afc0f..19abc649898 100644 --- a/src/mesa/main/teximage.h +++ b/src/mesa/main/teximage.h @@ -275,6 +275,11 @@ _mesa_CompressedTexSubImage3DARB(GLenum target, GLint level, GLint xoffset, GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize, const GLvoid *data); + +extern void GLAPIENTRY +_mesa_TexBuffer(GLenum target, GLenum internalFormat, GLuint buffer); + + /*@}*/ #endif diff --git a/src/mesa/main/texobj.c b/src/mesa/main/texobj.c index c1e3e4dec79..61b9bc70d77 100644 --- a/src/mesa/main/texobj.c +++ b/src/mesa/main/texobj.c @@ -29,6 +29,7 @@ #include "mfeatures.h" +#include "bufferobj.h" #include "colortab.h" #include "context.h" #include "enums.h" @@ -105,7 +106,8 @@ _mesa_initialize_texture_object( struct gl_texture_object *obj, target == GL_TEXTURE_CUBE_MAP_ARB || target == GL_TEXTURE_RECTANGLE_NV || target == GL_TEXTURE_1D_ARRAY_EXT || - target == GL_TEXTURE_2D_ARRAY_EXT); + target == GL_TEXTURE_2D_ARRAY_EXT || + target == GL_TEXTURE_BUFFER); memset(obj, 0, sizeof(*obj)); /* init the non-zero fields */ @@ -204,6 +206,8 @@ _mesa_delete_texture_object(struct gl_context *ctx, } } + _mesa_reference_buffer_object(ctx, &texObj->BufferObject, NULL); + /* destroy the mutex -- it may have allocated memory (eg on bsd) */ _glthread_DESTROY_MUTEX(texObj->Mutex); @@ -299,6 +303,7 @@ valid_texture_object(const struct gl_texture_object *tex) case GL_TEXTURE_RECTANGLE_NV: case GL_TEXTURE_1D_ARRAY_EXT: case GL_TEXTURE_2D_ARRAY_EXT: + case GL_TEXTURE_BUFFER: return GL_TRUE; case 0x99: _mesa_problem(NULL, "invalid reference to a deleted texture object"); @@ -989,6 +994,8 @@ target_enum_to_index(GLenum target) return TEXTURE_1D_ARRAY_INDEX; case GL_TEXTURE_2D_ARRAY_EXT: return TEXTURE_2D_ARRAY_INDEX; + case GL_TEXTURE_BUFFER_ARB: + return TEXTURE_BUFFER_INDEX; default: return -1; } diff --git a/src/mesa/main/texstate.c b/src/mesa/main/texstate.c index 41d531f5976..72f80508db7 100644 --- a/src/mesa/main/texstate.c +++ b/src/mesa/main/texstate.c @@ -692,7 +692,8 @@ alloc_proxy_textures( struct gl_context *ctx ) GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_1D_ARRAY_EXT, - GL_TEXTURE_2D_ARRAY_EXT + GL_TEXTURE_2D_ARRAY_EXT, + GL_TEXTURE_BUFFER }; GLint tgt; diff --git a/src/mesa/program/program.c b/src/mesa/program/program.c index 79034ab26f2..5b014872ed4 100644 --- a/src/mesa/program/program.c +++ b/src/mesa/program/program.c @@ -75,10 +75,10 @@ _mesa_init_program(struct gl_context *ctx) ASSERT(ctx->Const.FragmentProgram.MaxAddressOffset <= (1 << INST_INDEX_BITS)); /* If this fails, increase prog_instruction::TexSrcUnit size */ - ASSERT(MAX_TEXTURE_UNITS < (1 << 5)); + ASSERT(MAX_TEXTURE_UNITS <= (1 << 5)); /* If this fails, increase prog_instruction::TexSrcTarget size */ - ASSERT(NUM_TEXTURE_TARGETS < (1 << 3)); + ASSERT(NUM_TEXTURE_TARGETS <= (1 << 3)); ctx->Program.ErrorPos = -1; ctx->Program.ErrorString = _mesa_strdup(""); diff --git a/src/mesa/state_tracker/st_cb_texture.c b/src/mesa/state_tracker/st_cb_texture.c index 9d5eb113ff7..302f2e1fa17 100644 --- a/src/mesa/state_tracker/st_cb_texture.c +++ b/src/mesa/state_tracker/st_cb_texture.c @@ -87,6 +87,8 @@ gl_target_to_pipe(GLenum target) return PIPE_TEXTURE_1D_ARRAY; case GL_TEXTURE_2D_ARRAY_EXT: return PIPE_TEXTURE_2D_ARRAY; + case GL_TEXTURE_BUFFER: + return PIPE_BUFFER; default: assert(0); return 0; @@ -245,6 +247,7 @@ get_texture_dims(GLenum target) switch (target) { case GL_TEXTURE_1D: case GL_TEXTURE_1D_ARRAY_EXT: + case GL_TEXTURE_BUFFER: return 1; case GL_TEXTURE_2D: case GL_TEXTURE_CUBE_MAP_ARB: -- 2.30.2