/*
* 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.
*/
FLUSH_VERTICES(ctx, 0);
- ctx->Multisample.SampleCoverageValue = (GLfloat) CLAMP(value, 0.0, 1.0);
+ ctx->Multisample.SampleCoverageValue = CLAMP(value, 0.0f, 1.0f);
ctx->Multisample.SampleCoverageInvert = invert;
ctx->NewState |= _NEW_MULTISAMPLE;
}
switch (pname) {
case GL_SAMPLE_POSITION: {
- if (index >= ctx->DrawBuffer->Visual.samples) {
+ if ((int) index >= ctx->DrawBuffer->Visual.samples) {
_mesa_error( ctx, GL_INVALID_VALUE, "glGetMultisamplefv(index)" );
return;
}
/* winsys FBOs are upside down */
if (_mesa_is_winsys_fbo(ctx->DrawBuffer))
- val[1] = 1 - val[1];
+ val[1] = 1.0f - val[1];
return;
}
ctx->Multisample.SampleMaskValue = mask;
}
+/**
+ * Called via glMinSampleShadingARB
+ */
+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;
+ }
+
+ FLUSH_VERTICES(ctx, 0);
-/* Helper for checking a requested sample count against the limit
+ ctx->Multisample.MinSampleShadingValue = CLAMP(value, 0.0f, 1.0f);
+ ctx->NewState |= _NEW_MULTISAMPLE;
+}
+
+/**
+ * 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;
}
*
* And when describing the operation of TexImage*Multisample:
*
- * "The error INVALID_OPERATION may be generated if any of the following are true:
+ * "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
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) {
* "... 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;
}