X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fmain%2Fmultisample.c;h=8ede94b7458f8edfce7fb0fb27c52de8243b00e8;hb=cce982a70be5e24c6f6ee222c17c47eb8cba6921;hp=01b68df7afc64b14e32debaf2b0713e6309604b8;hpb=59d54334c96f44ed1d8bf660dc96221362a77d04;p=mesa.git diff --git a/src/mesa/main/multisample.c b/src/mesa/main/multisample.c index 01b68df7afc..8ede94b7458 100644 --- a/src/mesa/main/multisample.c +++ b/src/mesa/main/multisample.c @@ -1,6 +1,5 @@ /* * Mesa 3-D graphics library - * Version: 7.1 * * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. * @@ -17,9 +16,10 @@ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN - * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. */ @@ -27,21 +27,30 @@ #include "main/context.h" #include "main/macros.h" #include "main/multisample.h" +#include "main/mtypes.h" +#include "main/fbobject.h" +#include "main/glformats.h" +#include "main/state.h" /** * Called via glSampleCoverageARB */ void GLAPIENTRY -_mesa_SampleCoverageARB(GLclampf value, GLboolean invert) +_mesa_SampleCoverage(GLclampf value, GLboolean invert) { GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH( ctx ); + value = CLAMP(value, 0.0f, 1.0f); - ctx->Multisample.SampleCoverageValue = (GLfloat) CLAMP(value, 0.0, 1.0); + if (ctx->Multisample.SampleCoverageInvert == invert && + ctx->Multisample.SampleCoverageValue == value) + return; + + FLUSH_VERTICES(ctx, ctx->DriverFlags.NewSampleMask ? 0 : _NEW_MULTISAMPLE); + ctx->NewDriverState |= ctx->DriverFlags.NewSampleMask; + ctx->Multisample.SampleCoverageValue = value; ctx->Multisample.SampleCoverageInvert = invert; - ctx->NewState |= _NEW_MULTISAMPLE; } @@ -50,7 +59,7 @@ _mesa_SampleCoverageARB(GLclampf value, GLboolean invert) * \param ctx the GL context. */ void -_mesa_init_multisample(GLcontext *ctx) +_mesa_init_multisample(struct gl_context *ctx) { ctx->Multisample.Enabled = GL_TRUE; ctx->Multisample.SampleAlphaToCoverage = GL_FALSE; @@ -58,4 +67,216 @@ _mesa_init_multisample(GLcontext *ctx) ctx->Multisample.SampleCoverage = GL_FALSE; ctx->Multisample.SampleCoverageValue = 1.0; ctx->Multisample.SampleCoverageInvert = GL_FALSE; + ctx->Multisample.SampleShading = GL_FALSE; + ctx->Multisample.MinSampleShadingValue = 0.0f; + + /* ARB_texture_multisample / GL3.2 additions */ + ctx->Multisample.SampleMask = GL_FALSE; + ctx->Multisample.SampleMaskValue = ~(GLbitfield)0; +} + + +void GLAPIENTRY +_mesa_GetMultisamplefv(GLenum pname, GLuint index, GLfloat * val) +{ + GET_CURRENT_CONTEXT(ctx); + + if (ctx->NewState & _NEW_BUFFERS) { + _mesa_update_state(ctx); + } + + switch (pname) { + case GL_SAMPLE_POSITION: { + if ((int) index >= ctx->DrawBuffer->Visual.samples) { + _mesa_error( ctx, GL_INVALID_VALUE, "glGetMultisamplefv(index)" ); + return; + } + + ctx->Driver.GetSamplePosition(ctx, ctx->DrawBuffer, index, val); + + /* winsys FBOs are upside down */ + if (_mesa_is_winsys_fbo(ctx->DrawBuffer)) + val[1] = 1.0f - val[1]; + + return; + } + + default: + _mesa_error( ctx, GL_INVALID_ENUM, "glGetMultisamplefv(pname)" ); + return; + } +} + +static void +sample_maski(struct gl_context *ctx, GLuint index, GLbitfield mask) +{ + if (ctx->Multisample.SampleMaskValue == mask) + return; + + FLUSH_VERTICES(ctx, ctx->DriverFlags.NewSampleMask ? 0 : _NEW_MULTISAMPLE); + ctx->NewDriverState |= ctx->DriverFlags.NewSampleMask; + ctx->Multisample.SampleMaskValue = mask; +} + +void GLAPIENTRY +_mesa_SampleMaski_no_error(GLuint index, GLbitfield mask) +{ + GET_CURRENT_CONTEXT(ctx); + sample_maski(ctx, index, mask); +} + +void GLAPIENTRY +_mesa_SampleMaski(GLuint index, GLbitfield mask) +{ + GET_CURRENT_CONTEXT(ctx); + + if (!ctx->Extensions.ARB_texture_multisample) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glSampleMaski"); + return; + } + + if (index != 0) { + _mesa_error(ctx, GL_INVALID_VALUE, "glSampleMaski(index)"); + return; + } + + sample_maski(ctx, index, mask); +} + +static void +min_sample_shading(struct gl_context *ctx, GLclampf value) +{ + value = CLAMP(value, 0.0f, 1.0f); + + if (ctx->Multisample.MinSampleShadingValue == value) + return; + + FLUSH_VERTICES(ctx, + ctx->DriverFlags.NewSampleShading ? 0 : _NEW_MULTISAMPLE); + ctx->NewDriverState |= ctx->DriverFlags.NewSampleShading; + ctx->Multisample.MinSampleShadingValue = value; +} + +/** + * Called via glMinSampleShadingARB + */ +void GLAPIENTRY +_mesa_MinSampleShading_no_error(GLclampf value) +{ + GET_CURRENT_CONTEXT(ctx); + min_sample_shading(ctx, value); +} + +void GLAPIENTRY +_mesa_MinSampleShading(GLclampf value) +{ + GET_CURRENT_CONTEXT(ctx); + + if (!_mesa_has_ARB_sample_shading(ctx) && + !_mesa_has_OES_sample_shading(ctx)) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glMinSampleShading"); + return; + } + + min_sample_shading(ctx, value); +} + +/** + * Helper for checking a requested sample count against the limit + * for a particular (target, internalFormat) pair. The limit imposed, + * and the error generated, both depend on which extensions are supported. + * + * Returns a GL error enum, or GL_NO_ERROR if the requested sample count is + * acceptable. + */ +GLenum +_mesa_check_sample_count(struct gl_context *ctx, GLenum target, + GLenum internalFormat, GLsizei samples) +{ + /* Section 4.4 (Framebuffer objects), page 198 of the OpenGL ES 3.0.0 + * specification says: + * + * "If internalformat is a signed or unsigned integer format and samples + * is greater than zero, then the error INVALID_OPERATION is generated." + * + * This restriction is relaxed for OpenGL ES 3.1. + */ + if ((ctx->API == API_OPENGLES2 && ctx->Version == 30) && + _mesa_is_enum_format_integer(internalFormat) + && samples > 0) { + return GL_INVALID_OPERATION; + } + + /* If ARB_internalformat_query is supported, then treat its highest + * returned sample count as the absolute maximum for this format; it is + * allowed to exceed MAX_SAMPLES. + * + * From the ARB_internalformat_query spec: + * + * "If then the error INVALID_OPERATION is generated." + */ + if (ctx->Extensions.ARB_internalformat_query) { + GLint buffer[16] = {-1}; + GLint limit; + + ctx->Driver.QueryInternalFormat(ctx, target, internalFormat, + GL_SAMPLES, buffer); + /* since the query returns samples sorted in descending order, + * the first element is the greatest supported sample value. + */ + limit = buffer[0]; + + return samples > limit ? GL_INVALID_OPERATION : GL_NO_ERROR; + } + + /* If ARB_texture_multisample is supported, we have separate limits, + * which may be lower than MAX_SAMPLES: + * + * From the ARB_texture_multisample spec, when describing the operation + * of RenderbufferStorageMultisample: + * + * "If is a signed or unsigned integer format and + * is greater than the value of MAX_INTEGER_SAMPLES, then the + * error INVALID_OPERATION is generated" + * + * And when describing the operation of TexImage*Multisample: + * + * "The error INVALID_OPERATION may be generated if any of the following + * are true: + * + * * is a depth/stencil-renderable format and + * is greater than the value of MAX_DEPTH_TEXTURE_SAMPLES + * * is a color-renderable format and is + * grater than the value of MAX_COLOR_TEXTURE_SAMPLES + * * is a signed or unsigned integer format and + * is greater than the value of MAX_INTEGER_SAMPLES + */ + + if (ctx->Extensions.ARB_texture_multisample) { + if (_mesa_is_enum_format_integer(internalFormat)) + return samples > ctx->Const.MaxIntegerSamples + ? GL_INVALID_OPERATION : GL_NO_ERROR; + + if (target == GL_TEXTURE_2D_MULTISAMPLE || + target == GL_TEXTURE_2D_MULTISAMPLE_ARRAY) { + + if (_mesa_is_depth_or_stencil_format(internalFormat)) + return samples > ctx->Const.MaxDepthTextureSamples + ? GL_INVALID_OPERATION : GL_NO_ERROR; + else + return samples > ctx->Const.MaxColorTextureSamples + ? GL_INVALID_OPERATION : GL_NO_ERROR; + } + } + + /* No more specific limit is available, so just use MAX_SAMPLES: + * + * On p205 of the GL3.1 spec: + * + * "... or if samples is greater than MAX_SAMPLES, then the error + * INVALID_VALUE is generated" + */ + return (GLuint) samples > ctx->Const.MaxSamples + ? GL_INVALID_VALUE : GL_NO_ERROR; }