This removes any dependency on driver validation of the number of
framebuffer samples.
Signed-off-by: Bas Nieuwenhuizen <b...@basnieuwenhuizen.nl>
---
src/mesa/drivers/dri/i965/brw_util.h | 5 +++--
src/mesa/drivers/dri/i965/gen6_cc.c | 6 +++---
src/mesa/drivers/dri/i965/gen6_multisample_state.c | 2 +-
src/mesa/drivers/dri/i965/gen8_blend_state.c | 6 +++---
src/mesa/drivers/dri/i965/gen8_depth_state.c | 3 ++-
src/mesa/drivers/dri/i965/gen8_sf_state.c | 4 ++--
src/mesa/main/framebuffer.c | 19 +++++++++++++++++++
src/mesa/main/framebuffer.h | 3 +++
src/mesa/main/mtypes.h | 1 -
src/mesa/main/state.c | 17 -----------------
src/mesa/program/prog_statevars.c | 2 +-
src/mesa/state_tracker/st_atom_rasterizer.c | 4 ++--
src/mesa/state_tracker/st_atom_shader.c | 2 +-
src/mesa/swrast/s_points.c | 4 ++--
14 files changed, 42 insertions(+), 36 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_util.h
b/src/mesa/drivers/dri/i965/brw_util.h
index 1f27e98..3e9a6ee 100644
--- a/src/mesa/drivers/dri/i965/brw_util.h
+++ b/src/mesa/drivers/dri/i965/brw_util.h
@@ -34,6 +34,7 @@
#define BRW_UTIL_H
#include "brw_context.h"
+#include "main/framebuffer.h"
extern GLuint brw_translate_blend_factor( GLenum factor );
extern GLuint brw_translate_blend_equation( GLenum mode );
@@ -49,13 +50,13 @@ brw_get_line_width(struct brw_context *brw)
* implementation-dependent maximum non-antialiased line width."
*/
float line_width =
- CLAMP(!brw->ctx.Multisample._Enabled && !brw->ctx.Line.SmoothFlag
+ CLAMP(!_mesa_is_multisample_enabled(&brw->ctx) &&
!brw->ctx.Line.SmoothFlag
? roundf(brw->ctx.Line.Width) : brw->ctx.Line.Width,
0.0f, brw->ctx.Const.MaxLineWidth);
uint32_t line_width_u3_7 = U_FIXED(line_width, 7);
/* Line width of 0 is not allowed when MSAA enabled */
- if (brw->ctx.Multisample._Enabled) {
+ if (_mesa_is_multisample_enabled(&brw->ctx)) {
if (line_width_u3_7 == 0)
line_width_u3_7 = 1;
} else if (brw->ctx.Line.SmoothFlag && line_width < 1.5f) {
diff --git a/src/mesa/drivers/dri/i965/gen6_cc.c
b/src/mesa/drivers/dri/i965/gen6_cc.c
index cee139b..f5a7d4d 100644
--- a/src/mesa/drivers/dri/i965/gen6_cc.c
+++ b/src/mesa/drivers/dri/i965/gen6_cc.c
@@ -198,14 +198,14 @@ gen6_upload_blend_state(struct brw_context *brw)
if(!is_buffer_zero_integer_format) {
/* _NEW_MULTISAMPLE */
blend[b].blend1.alpha_to_coverage =
- ctx->Multisample._Enabled &&
ctx->Multisample.SampleAlphaToCoverage;
+ _mesa_is_multisample_enabled(ctx) &&
ctx->Multisample.SampleAlphaToCoverage;
/* From SandyBridge PRM, volume 2 Part 1, section 8.2.3, BLEND_STATE:
* DWord 1, Bit 30 (AlphaToOne Enable):
* "If Dual Source Blending is enabled, this bit must be disabled"
*/
WARN_ONCE(ctx->Color.Blend[b]._UsesDualSrc &&
- ctx->Multisample._Enabled &&
+ _mesa_is_multisample_enabled(ctx) &&
ctx->Multisample.SampleAlphaToOne,
"HW workaround: disabling alpha to one with dual src "
"blending\n");
@@ -213,7 +213,7 @@ gen6_upload_blend_state(struct brw_context *brw)
blend[b].blend1.alpha_to_one = false;
else
blend[b].blend1.alpha_to_one =
- ctx->Multisample._Enabled && ctx->Multisample.SampleAlphaToOne;
+ _mesa_is_multisample_enabled(ctx) &&
ctx->Multisample.SampleAlphaToOne;
blend[b].blend1.alpha_to_coverage_dither = (brw->gen >= 7);
}
diff --git a/src/mesa/drivers/dri/i965/gen6_multisample_state.c
b/src/mesa/drivers/dri/i965/gen6_multisample_state.c
index 8eb620d..fcd313a 100644
--- a/src/mesa/drivers/dri/i965/gen6_multisample_state.c
+++ b/src/mesa/drivers/dri/i965/gen6_multisample_state.c
@@ -171,7 +171,7 @@ gen6_determine_sample_mask(struct brw_context *brw)
/* BRW_NEW_NUM_SAMPLES */
unsigned num_samples = brw->num_samples;
- if (ctx->Multisample._Enabled) {
+ if (_mesa_is_multisample_enabled(ctx)) {
if (ctx->Multisample.SampleCoverage) {
coverage = ctx->Multisample.SampleCoverageValue;
coverage_invert = ctx->Multisample.SampleCoverageInvert;
diff --git a/src/mesa/drivers/dri/i965/gen8_blend_state.c
b/src/mesa/drivers/dri/i965/gen8_blend_state.c
index 786c79a..63186bd 100644
--- a/src/mesa/drivers/dri/i965/gen8_blend_state.c
+++ b/src/mesa/drivers/dri/i965/gen8_blend_state.c
@@ -65,7 +65,7 @@ gen8_upload_blend_state(struct brw_context *brw)
if (rb_zero_type != GL_INT && rb_zero_type != GL_UNSIGNED_INT) {
/* _NEW_MULTISAMPLE */
- if (ctx->Multisample._Enabled) {
+ if (_mesa_is_multisample_enabled(ctx)) {
if (ctx->Multisample.SampleAlphaToCoverage) {
blend[0] |= GEN8_BLEND_ALPHA_TO_COVERAGE_ENABLE;
blend[0] |= GEN8_BLEND_ALPHA_TO_COVERAGE_DITHER_ENABLE;
@@ -183,7 +183,7 @@ gen8_upload_blend_state(struct brw_context *brw)
* "If Dual Source Blending is enabled, this bit must be disabled."
*/
WARN_ONCE(ctx->Color.Blend[i]._UsesDualSrc &&
- ctx->Multisample._Enabled &&
+ _mesa_is_multisample_enabled(ctx) &&
ctx->Multisample.SampleAlphaToOne,
"HW workaround: disabling alpha to one with dual src "
"blending\n");
@@ -226,7 +226,7 @@ gen8_upload_ps_blend(struct brw_context *brw)
dw1 |= GEN8_PS_BLEND_ALPHA_TEST_ENABLE;
/* _NEW_MULTISAMPLE */
- if (ctx->Multisample._Enabled && ctx->Multisample.SampleAlphaToCoverage)
+ if (_mesa_is_multisample_enabled(ctx) &&
ctx->Multisample.SampleAlphaToCoverage)
dw1 |= GEN8_PS_BLEND_ALPHA_TO_COVERAGE_ENABLE;
/* Used for implementing the following bit of GL_EXT_texture_integer:
diff --git a/src/mesa/drivers/dri/i965/gen8_depth_state.c
b/src/mesa/drivers/dri/i965/gen8_depth_state.c
index 93100a0..8aaa1a8 100644
--- a/src/mesa/drivers/dri/i965/gen8_depth_state.c
+++ b/src/mesa/drivers/dri/i965/gen8_depth_state.c
@@ -29,6 +29,7 @@
#include "brw_state.h"
#include "brw_defines.h"
#include "brw_wm.h"
+#include "main/framebuffer.h"
/**
* Helper function to emit depth related command packets.
@@ -303,7 +304,7 @@ pma_fix_enable(const struct brw_context *brw)
const bool kill_pixel =
brw->wm.prog_data->uses_kill ||
brw->wm.prog_data->uses_omask ||
- (ctx->Multisample._Enabled && ctx->Multisample.SampleAlphaToCoverage) ||
+ (_mesa_is_multisample_enabled(ctx) &&
ctx->Multisample.SampleAlphaToCoverage) ||
ctx->Color.AlphaEnabled;
/* The big formula in CACHE_MODE_1::NP PMA FIX ENABLE. */
diff --git a/src/mesa/drivers/dri/i965/gen8_sf_state.c
b/src/mesa/drivers/dri/i965/gen8_sf_state.c
index 8b6f31f..2ac21f7 100644
--- a/src/mesa/drivers/dri/i965/gen8_sf_state.c
+++ b/src/mesa/drivers/dri/i965/gen8_sf_state.c
@@ -178,7 +178,7 @@ upload_sf(struct brw_context *brw)
dw3 |= GEN6_SF_USE_STATE_POINT_WIDTH;
/* _NEW_POINT | _NEW_MULTISAMPLE */
- if ((ctx->Point.SmoothFlag || ctx->Multisample._Enabled) &&
+ if ((ctx->Point.SmoothFlag || _mesa_is_multisample_enabled(ctx)) &&
!ctx->Point.PointSprite) {
dw3 |= GEN8_SF_SMOOTH_POINT_ENABLE;
}
@@ -249,7 +249,7 @@ upload_raster(struct brw_context *brw)
if (ctx->Point.SmoothFlag)
dw1 |= GEN8_RASTER_SMOOTH_POINT_ENABLE;
- if (ctx->Multisample._Enabled)
+ if (_mesa_is_multisample_enabled(ctx))
dw1 |= GEN8_RASTER_API_MULTISAMPLE_ENABLE;
if (ctx->Polygon.OffsetFill)
diff --git a/src/mesa/main/framebuffer.c b/src/mesa/main/framebuffer.c
index d18166d..f69dc6c 100644
--- a/src/mesa/main/framebuffer.c
+++ b/src/mesa/main/framebuffer.c
@@ -983,3 +983,22 @@ _mesa_is_front_buffer_drawing(const struct gl_framebuffer
*fb)
return (fb->_NumColorDrawBuffers >= 1 &&
fb->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT);
}
+
+static inline GLuint
+_mesa_geometric_nonvalidated_samples(const struct gl_framebuffer *buffer)
+{
+ return buffer->_HasAttachments ?
+ buffer->Visual.samples :
+ buffer->DefaultGeometry.NumSamples;
+}
+
+bool _mesa_is_multisample_enabled(const struct gl_context *ctx)
+{
+ /* The sample count may not be validated by the driver, but when it is set,
+ * we know that is in a valid range and no driver should ever validate a
+ * multisampled framebuffer to non-multisampled and vice-versa.
+ */
+ return ctx->Multisample.Enabled &&
+ ctx->DrawBuffer &&
+ _mesa_geometric_nonvalidated_samples(ctx->DrawBuffer) > 1;
+}
diff --git a/src/mesa/main/framebuffer.h b/src/mesa/main/framebuffer.h
index fa434d4..384f749 100644
--- a/src/mesa/main/framebuffer.h
+++ b/src/mesa/main/framebuffer.h
@@ -146,4 +146,7 @@ _mesa_is_front_buffer_reading(const struct gl_framebuffer
*fb);
extern bool
_mesa_is_front_buffer_drawing(const struct gl_framebuffer *fb);
+extern bool
+_mesa_is_multisample_enabled(const struct gl_context *ctx);
+
#endif /* FRAMEBUFFER_H */
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 5d8bfe4..399f450 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -667,7 +667,6 @@ struct gl_list_attrib
struct gl_multisample_attrib
{
GLboolean Enabled;
- GLboolean _Enabled; /**< true if Enabled and multisample buffer */
GLboolean SampleAlphaToCoverage;
GLboolean SampleAlphaToOne;
GLboolean SampleCoverage;
diff --git a/src/mesa/main/state.c b/src/mesa/main/state.c
index 57f1341..917ae4d 100644
--- a/src/mesa/main/state.c
+++ b/src/mesa/main/state.c
@@ -344,20 +344,6 @@ update_frontbit(struct gl_context *ctx)
/**
- * Update derived multisample state.
- */
-static void
-update_multisample(struct gl_context *ctx)
-{
- ctx->Multisample._Enabled = GL_FALSE;
- if (ctx->Multisample.Enabled &&
- ctx->DrawBuffer &&
- _mesa_geometric_samples(ctx->DrawBuffer) > 0)
- ctx->Multisample._Enabled = GL_TRUE;
-}
-
-
-/**
* Update the ctx->VertexProgram._TwoSideEnabled flag.
*/
static void
@@ -450,9 +436,6 @@ _mesa_update_state_locked( struct gl_context *ctx )
if (new_state & _NEW_PIXEL)
_mesa_update_pixel( ctx, new_state );
- if (new_state & (_NEW_MULTISAMPLE | _NEW_BUFFERS))
- update_multisample( ctx );
-
/* ctx->_NeedEyeCoords is now up to date.
*
* If the truth value of this variable has changed, update for the
diff --git a/src/mesa/program/prog_statevars.c
b/src/mesa/program/prog_statevars.c
index db53377..03ece67 100644
--- a/src/mesa/program/prog_statevars.c
+++ b/src/mesa/program/prog_statevars.c
@@ -502,7 +502,7 @@ _mesa_fetch_state(struct gl_context *ctx, const
gl_state_index state[],
minImplSize = ctx->Const.MinPointSizeAA;
maxImplSize = ctx->Const.MaxPointSize;
}
- else if (ctx->Point.SmoothFlag || ctx->Multisample._Enabled) {
+ else if (ctx->Point.SmoothFlag ||
_mesa_is_multisample_enabled(ctx)) {
minImplSize = ctx->Const.MinPointSizeAA;
maxImplSize = ctx->Const.MaxPointSizeAA;
}
diff --git a/src/mesa/state_tracker/st_atom_rasterizer.c
b/src/mesa/state_tracker/st_atom_rasterizer.c
index c1c143b..ed9deb0 100644
--- a/src/mesa/state_tracker/st_atom_rasterizer.c
+++ b/src/mesa/state_tracker/st_atom_rasterizer.c
@@ -236,12 +236,12 @@ static void update_raster_state( struct st_context *st )
raster->line_stipple_factor = ctx->Line.StippleFactor - 1;
/* _NEW_MULTISAMPLE */
- raster->multisample = ctx->Multisample._Enabled;
+ raster->multisample = _mesa_is_multisample_enabled(ctx);
/* _NEW_MULTISAMPLE | _NEW_BUFFERS */
raster->force_persample_interp =
!st->force_persample_in_shader &&
- ctx->Multisample._Enabled &&
+ _mesa_is_multisample_enabled(ctx) &&
ctx->Multisample.SampleShading &&
ctx->Multisample.MinSampleShadingValue *
_mesa_geometric_samples(ctx->DrawBuffer) > 1;
diff --git a/src/mesa/state_tracker/st_atom_shader.c
b/src/mesa/state_tracker/st_atom_shader.c
index ff90bd6..709f0cb 100644
--- a/src/mesa/state_tracker/st_atom_shader.c
+++ b/src/mesa/state_tracker/st_atom_shader.c
@@ -74,7 +74,7 @@ update_fp( struct st_context *st )
/* _NEW_MULTISAMPLE | _NEW_BUFFERS */
key.persample_shading =
st->force_persample_in_shader &&
- st->ctx->Multisample._Enabled &&
+ _mesa_is_multisample_enabled(st->ctx) &&
st->ctx->Multisample.SampleShading &&
st->ctx->Multisample.MinSampleShadingValue *
_mesa_geometric_samples(st->ctx->DrawBuffer) > 1;
diff --git a/src/mesa/swrast/s_points.c b/src/mesa/swrast/s_points.c
index d9aae73..3163b04 100644
--- a/src/mesa/swrast/s_points.c
+++ b/src/mesa/swrast/s_points.c
@@ -22,7 +22,7 @@
* OTHER DEALINGS IN THE SOFTWARE.
*/
-
+#include "main/framebuffer.h"
#include "main/glheader.h"
#include "main/macros.h"
#include "s_context.h"
@@ -257,7 +257,7 @@ smooth_point(struct gl_context *ctx, const SWvertex *vert)
size = get_size(ctx, vert, GL_TRUE);
/* alpha attenuation / fade factor */
- if (ctx->Multisample._Enabled) {
+ if (_mesa_is_multisample_enabled(ctx)) {
if (vert->pointSize >= ctx->Point.Threshold) {
alphaAtten = 1.0F;
}
--
2.7.3
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