diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/main/teximage.c | 167 |
1 files changed, 163 insertions, 4 deletions
diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c index 9209d8638e1..0dcf88ae424 100644 --- a/src/mesa/main/teximage.c +++ b/src/mesa/main/teximage.c @@ -4159,15 +4159,174 @@ _mesa_TexBufferRange(GLenum target, GLenum internalFormat, GLuint buffer, texbufferrange(ctx, target, internalFormat, bufObj, offset, size); } +static GLboolean +is_renderable_texture_format(struct gl_context *ctx, GLenum internalformat) +{ + /* Everything that is allowed for renderbuffers, + * except for a base format of GL_STENCIL_INDEX. + */ + GLenum baseFormat = _mesa_base_fbo_format(ctx, internalformat); + return baseFormat != 0 && baseFormat != GL_STENCIL_INDEX; +} /** GL_ARB_texture_multisample */ +static GLboolean +check_multisample_target(GLuint dims, GLenum target) +{ + switch(target) { + case GL_TEXTURE_2D_MULTISAMPLE: + case GL_PROXY_TEXTURE_2D_MULTISAMPLE: + return dims == 2; + + case GL_TEXTURE_2D_MULTISAMPLE_ARRAY: + case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY: + return dims == 3; + + default: + return GL_FALSE; + } +} + +static void +teximagemultisample(GLuint dims, GLenum target, GLsizei samples, + GLint internalformat, GLsizei width, GLsizei height, + GLsizei depth, GLboolean fixedsamplelocations) +{ + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + GLboolean sizeOK, dimensionsOK; + gl_format texFormat; + + GET_CURRENT_CONTEXT(ctx); + + if (!(ctx->Extensions.ARB_texture_multisample + && _mesa_is_desktop_gl(ctx))) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glTexImage%uDMultisample", dims); + return; + } + + if (!check_multisample_target(dims, target)) { + _mesa_error(ctx, GL_INVALID_ENUM, "glTexImage%uDMultisample(target)", dims); + return; + } + + /* check that the specified internalformat is color/depth/stencil-renderable; + * refer GL3.1 spec 4.4.4 + */ + + if (!is_renderable_texture_format(ctx, internalformat)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glTexImage%uDMultisample(internalformat=%s)", + dims, + _mesa_lookup_enum_by_nr(internalformat)); + return; + } + + if (_mesa_is_enum_format_integer(internalformat)) { + if (samples > ctx->Const.MaxIntegerSamples) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glTexImage%uDMultisample(samples>GL_MAX_INTEGER_SAMPLES)", + dims); + return; + } + } + else if (_mesa_is_depth_or_stencil_format(internalformat)) { + if (samples > ctx->Const.MaxDepthTextureSamples) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glTexImage%uDMultisample(samples>GL_MAX_DEPTH_TEXTURE_SAMPLES)", + dims); + return; + } + } + else { + if (samples > ctx->Const.MaxColorTextureSamples) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glTexImage%uDMultisample(samples>GL_MAX_COLOR_TEXTURE_SAMPLES)", + dims); + return; + } + } + + /* TODO: should ask the driver for the exact limit for this internalformat + * once IDR's internalformat_query bits land + */ + + texObj = _mesa_get_current_tex_object(ctx, target); + texImage = _mesa_get_tex_image(ctx, texObj, 0, 0); + + if (texImage == NULL) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uDMultisample()", dims); + return; + } + + texFormat = _mesa_choose_texture_format(ctx, texObj, target, 0, + internalformat, GL_NONE, GL_NONE); + assert(texFormat != MESA_FORMAT_NONE); + + dimensionsOK = _mesa_legal_texture_dimensions(ctx, target, 0, + width, height, depth, 0); + + sizeOK = ctx->Driver.TestProxyTexImage(ctx, target, 0, texFormat, + width, height, depth, 0); + + if (_mesa_is_proxy_texture(target)) { + if (dimensionsOK && sizeOK) { + _mesa_init_teximage_fields(ctx, texImage, + width, height, depth, 0, internalformat, texFormat); + texImage->NumSamples = samples; + texImage->FixedSampleLocations = fixedsamplelocations; + } + else { + /* clear all image fields */ + _mesa_init_teximage_fields(ctx, texImage, + 0, 0, 0, 0, GL_NONE, MESA_FORMAT_NONE); + } + } + else { + if (!dimensionsOK) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glTexImage%uDMultisample(invalid width or height)", dims); + return; + } + + if (!sizeOK) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, + "glTexImage%uDMultisample(texture too large)", dims); + return; + } + + ctx->Driver.FreeTextureImageBuffer(ctx, texImage); + + _mesa_init_teximage_fields(ctx, texImage, + width, height, depth, 0, internalformat, texFormat); + + texImage->NumSamples = samples; + texImage->FixedSampleLocations = fixedsamplelocations; + + if (width > 0 && height > 0 && depth > 0) { + + if (!ctx->Driver.AllocTextureStorage(ctx, texObj, 1, + width, height, depth)) { + /* tidy up the texture image state. strictly speaking, + * we're allowed to just leave this in whatever state we + * like, but being tidy is good. + */ + _mesa_init_teximage_fields(ctx, texImage, + 0, 0, 0, 0, GL_NONE, MESA_FORMAT_NONE); + } + } + + _mesa_update_fbo_texture(ctx, texObj, 0, 0); + } +} + void GLAPIENTRY _mesa_TexImage2DMultisample(GLenum target, GLsizei samples, GLint internalformat, GLsizei width, GLsizei height, GLboolean fixedsamplelocations) { - assert(!"Not implemented"); - /* allocate a single 2d multisample texture */ + teximagemultisample(2, target, samples, internalformat, + width, height, 1, fixedsamplelocations); } void GLAPIENTRY @@ -4176,6 +4335,6 @@ _mesa_TexImage3DMultisample(GLenum target, GLsizei samples, GLsizei height, GLsizei depth, GLboolean fixedsamplelocations) { - assert(!"Not implemented"); - /* allocate an array of 2d multisample textures */ + teximagemultisample(3, target, samples, internalformat, + width, height, depth, fixedsamplelocations); } |