* 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
+ * THE AUTHORS 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/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 );
+ FLUSH_VERTICES(ctx, 0);
ctx->Multisample.SampleCoverageValue = (GLfloat) CLAMP(value, 0.0, 1.0);
ctx->Multisample.SampleCoverageInvert = 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;
ctx->Multisample.SampleCoverage = GL_FALSE;
ctx->Multisample.SampleCoverageValue = 1.0;
ctx->Multisample.SampleCoverageInvert = GL_FALSE;
+
+ /* 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 (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 - val[1];
+
+ return;
+ }
+
+ default:
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetMultisamplefv(pname)" );
+ return;
+ }
+}
+
+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;
+ }
+
+ FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);
+ ctx->Multisample.SampleMaskValue = mask;
+}
+
+
+/* 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)
+{
+ /* 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 <samples is greater than the maximum number of samples supported
+ * 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;
+
+ 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 <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;
+
+ 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 samples > ctx->Const.MaxSamples ? GL_INVALID_VALUE : GL_NO_ERROR;
}
projects / mesa.git / blobdiff