/*
* Mesa 3-D graphics library
- * Version: 7.1
*
* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
*
* 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.
*/
#include "main/mtypes.h"
#include "main/fbobject.h"
#include "main/glformats.h"
+#include "main/state.h"
/**
{
GET_CURRENT_CONTEXT(ctx);
- FLUSH_VERTICES(ctx, 0);
+ 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;
}
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;
{
GET_CURRENT_CONTEXT(ctx);
+ if (ctx->NewState & _NEW_BUFFERS) {
+ _mesa_update_state(ctx);
+ }
+
switch (pname) {
case GL_SAMPLE_POSITION: {
if (index >= ctx->DrawBuffer->Visual.samples) {
/* winsys FBOs are upside down */
if (_mesa_is_winsys_fbo(ctx->DrawBuffer))
- val[1] = 1 - val[1];
+ val[1] = 1.0f - val[1];
return;
}
+ case GL_PROGRAMMABLE_SAMPLE_LOCATION_ARB:
+ if (!ctx->Extensions.ARB_sample_locations) {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetMultisamplefv(pname)" );
+ return;
+ }
+
+ if (index >= MAX_SAMPLE_LOCATION_TABLE_SIZE * 2) {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glGetMultisamplefv(index)" );
+ return;
+ }
+
+ if (ctx->DrawBuffer->SampleLocationTable)
+ *val = ctx->DrawBuffer->SampleLocationTable[index];
+ else
+ *val = 0.5f;
+
+ 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)
{
return;
}
- FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);
- ctx->Multisample.SampleMaskValue = mask;
+ 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
+/**
+ * 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.
*
_mesa_check_sample_count(struct gl_context *ctx, GLenum target,
GLenum internalFormat, GLsizei samples)
{
- /* 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.
+ /* 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:
*
* for <internalformat> then the error INVALID_OPERATION is generated."
*/
if (ctx->Extensions.ARB_internalformat_query) {
- GLint buffer[16];
- int count = ctx->Driver.QuerySamplesForFormat(ctx, target, internalFormat, buffer);
- int limit = count ? buffer[0] : -1;
+ 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 for
- * integer formats.
+ /* If ARB_texture_multisample is supported, we have separate limits,
+ * which may be lower than MAX_SAMPLES:
*
- * From the ARB_texture_multisample spec:
+ * From the ARB_texture_multisample spec, when describing the operation
+ * of RenderbufferStorageMultisample:
*
* "If <internalformat> is a signed or unsigned integer format and
* <samples> 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:
+ *
+ * * <internalformat> is a depth/stencil-renderable format and <samples>
+ * is greater than the value of MAX_DEPTH_TEXTURE_SAMPLES
+ * * <internalformat> is a color-renderable format and <samples> is
+ * grater than the value of MAX_COLOR_TEXTURE_SAMPLES
+ * * <internalformat> is a signed or unsigned integer format and
+ * <samples> 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;
+ 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:
* "... or if samples is greater than MAX_SAMPLES, then the error
* INVALID_VALUE is generated"
*/
- return samples > ctx->Const.MaxSamples ? GL_INVALID_VALUE : GL_NO_ERROR;
+ return (GLuint) samples > ctx->Const.MaxSamples
+ ? GL_INVALID_VALUE : GL_NO_ERROR;
}
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