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-rw-r--r--src/mesa/swrast/s_aalinetemp.h2
-rw-r--r--src/mesa/swrast/s_accum.c8
-rw-r--r--src/mesa/swrast/s_bitmap.c9
-rw-r--r--src/mesa/swrast/s_blit.c5
-rw-r--r--src/mesa/swrast/s_buffers.c6
-rw-r--r--src/mesa/swrast/s_context.c3
-rw-r--r--src/mesa/swrast/s_context.h52
-rw-r--r--src/mesa/swrast/s_copypix.c4
-rw-r--r--src/mesa/swrast/s_drawpix.c12
-rw-r--r--src/mesa/swrast/s_fog.c4
-rw-r--r--src/mesa/swrast/s_fragprog.c75
-rw-r--r--src/mesa/swrast/s_imaging.c20
-rw-r--r--src/mesa/swrast/s_readpix.c12
-rw-r--r--src/mesa/swrast/s_span.c5
-rw-r--r--src/mesa/swrast/s_stencil.c6
-rw-r--r--src/mesa/swrast/s_texcombine.c172
-rw-r--r--src/mesa/swrast/s_texfilter.c1114
-rw-r--r--src/mesa/swrast/s_texstore.c15
-rw-r--r--src/mesa/swrast/s_triangle.c15
19 files changed, 794 insertions, 745 deletions
diff --git a/src/mesa/swrast/s_aalinetemp.h b/src/mesa/swrast/s_aalinetemp.h
index ca08203d831..42ffe9f20c1 100644
--- a/src/mesa/swrast/s_aalinetemp.h
+++ b/src/mesa/swrast/s_aalinetemp.h
@@ -76,7 +76,7 @@ NAME(plot)(GLcontext *ctx, struct LineInfo *line, int ix, int iy)
ATTRIB_LOOP_BEGIN
GLfloat (*attribArray)[4] = line->span.array->attribs[attr];
if (attr >= FRAG_ATTRIB_TEX0 && attr < FRAG_ATTRIB_VAR0
- && !ctx->FragmentProgram._Active) {
+ && !ctx->FragmentProgram._Current) {
/* texcoord w/ divide by Q */
const GLuint unit = attr - FRAG_ATTRIB_TEX0;
const GLfloat invQ = solve_plane_recip(fx, fy, line->attrPlane[attr][3]);
diff --git a/src/mesa/swrast/s_accum.c b/src/mesa/swrast/s_accum.c
index ff741777e75..c6c7dbf5cf0 100644
--- a/src/mesa/swrast/s_accum.c
+++ b/src/mesa/swrast/s_accum.c
@@ -550,7 +550,7 @@ _swrast_Accum(GLcontext *ctx, GLenum op, GLfloat value)
SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLint xpos, ypos, width, height;
- if (SWRAST_CONTEXT(ctx)->NewState)
+ if (swrast->NewState)
_swrast_validate_derived( ctx );
if (!ctx->DrawBuffer->Attachment[BUFFER_ACCUM].Renderbuffer) {
@@ -558,9 +558,9 @@ _swrast_Accum(GLcontext *ctx, GLenum op, GLfloat value)
return;
}
- RENDER_START(swrast, ctx);
+ swrast_render_start(ctx);
- /* Compute region after calling RENDER_START so that we know the
+ /* Compute region after calling swrast_render_start() so that we know the
* drawbuffer's size/bounds are up to date.
*/
xpos = ctx->DrawBuffer->_Xmin;
@@ -595,5 +595,5 @@ _swrast_Accum(GLcontext *ctx, GLenum op, GLfloat value)
break;
}
- RENDER_FINISH(swrast, ctx);
+ swrast_render_finish(ctx);
}
diff --git a/src/mesa/swrast/s_bitmap.c b/src/mesa/swrast/s_bitmap.c
index 35b34e654ff..5e7822cf323 100644
--- a/src/mesa/swrast/s_bitmap.c
+++ b/src/mesa/swrast/s_bitmap.c
@@ -50,7 +50,6 @@ _swrast_Bitmap( GLcontext *ctx, GLint px, GLint py,
const struct gl_pixelstore_attrib *unpack,
const GLubyte *bitmap )
{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLint row, col;
GLuint count = 0;
SWspan span;
@@ -61,7 +60,7 @@ _swrast_Bitmap( GLcontext *ctx, GLint px, GLint py,
if (!bitmap)
return;
- RENDER_START(swrast,ctx);
+ swrast_render_start(ctx);
if (SWRAST_CONTEXT(ctx)->NewState)
_swrast_validate_derived( ctx );
@@ -132,7 +131,7 @@ _swrast_Bitmap( GLcontext *ctx, GLint px, GLint py,
}
}
- RENDER_FINISH(swrast,ctx);
+ swrast_render_finish(ctx);
_mesa_unmap_bitmap_pbo(ctx, unpack);
}
@@ -157,7 +156,7 @@ _swrast_Bitmap( GLcontext *ctx, GLint px, GLint py,
ASSERT(ctx->RenderMode == GL_RENDER);
ASSERT(bitmap);
- RENDER_START(swrast,ctx);
+ swrast_render_start(ctx);
if (SWRAST_CONTEXT(ctx)->NewState)
_swrast_validate_derived( ctx );
@@ -224,6 +223,6 @@ _swrast_Bitmap( GLcontext *ctx, GLint px, GLint py,
}
}
- RENDER_FINISH(swrast,ctx);
+ swrast_render_finish(ctx);
}
#endif
diff --git a/src/mesa/swrast/s_blit.c b/src/mesa/swrast/s_blit.c
index bc4b2ac6251..0e32cb8f653 100644
--- a/src/mesa/swrast/s_blit.c
+++ b/src/mesa/swrast/s_blit.c
@@ -737,7 +737,6 @@ _swrast_BlitFramebuffer(GLcontext *ctx,
GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
GLbitfield mask, GLenum filter)
{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
static const GLint buffers[3] = {
GL_COLOR_BUFFER_BIT,
GL_DEPTH_BUFFER_BIT,
@@ -753,7 +752,7 @@ _swrast_BlitFramebuffer(GLcontext *ctx,
return;
}
- RENDER_START(swrast, ctx);
+ swrast_render_start(ctx);
if (srcX1 - srcX0 == dstX1 - dstX0 &&
srcY1 - srcY0 == dstY1 - dstY0 &&
@@ -789,5 +788,5 @@ _swrast_BlitFramebuffer(GLcontext *ctx,
}
}
- RENDER_FINISH(swrast, ctx);
+ swrast_render_finish(ctx);
}
diff --git a/src/mesa/swrast/s_buffers.c b/src/mesa/swrast/s_buffers.c
index 9e87d6d4857..af475ad8cb5 100644
--- a/src/mesa/swrast/s_buffers.c
+++ b/src/mesa/swrast/s_buffers.c
@@ -307,8 +307,6 @@ clear_color_buffers(GLcontext *ctx)
void
_swrast_Clear(GLcontext *ctx, GLbitfield buffers)
{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
-
#ifdef DEBUG_FOO
{
const GLbitfield legalBits =
@@ -327,7 +325,7 @@ _swrast_Clear(GLcontext *ctx, GLbitfield buffers)
}
#endif
- RENDER_START(swrast,ctx);
+ swrast_render_start(ctx);
/* do software clearing here */
if (buffers) {
@@ -347,5 +345,5 @@ _swrast_Clear(GLcontext *ctx, GLbitfield buffers)
}
}
- RENDER_FINISH(swrast,ctx);
+ swrast_render_finish(ctx);
}
diff --git a/src/mesa/swrast/s_context.c b/src/mesa/swrast/s_context.c
index 62857ddeb0d..297940adbd6 100644
--- a/src/mesa/swrast/s_context.c
+++ b/src/mesa/swrast/s_context.c
@@ -533,6 +533,9 @@ _swrast_update_texture_samplers(GLcontext *ctx)
SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLuint u;
+ if (!swrast)
+ return; /* pipe hack */
+
for (u = 0; u < ctx->Const.MaxTextureImageUnits; u++) {
const struct gl_texture_object *tObj = ctx->Texture.Unit[u]._Current;
/* Note: If tObj is NULL, the sample function will be a simple
diff --git a/src/mesa/swrast/s_context.h b/src/mesa/swrast/s_context.h
index a511d1c9a17..cdd6fa5048d 100644
--- a/src/mesa/swrast/s_context.h
+++ b/src/mesa/swrast/s_context.h
@@ -238,21 +238,43 @@ extern void
_swrast_update_texture_samplers(GLcontext *ctx);
-#define SWRAST_CONTEXT(ctx) ((SWcontext *)ctx->swrast_context)
-
-#define RENDER_START(SWctx, GLctx) \
- do { \
- if ((SWctx)->Driver.SpanRenderStart) { \
- (*(SWctx)->Driver.SpanRenderStart)(GLctx); \
- } \
- } while (0)
-
-#define RENDER_FINISH(SWctx, GLctx) \
- do { \
- if ((SWctx)->Driver.SpanRenderFinish) { \
- (*(SWctx)->Driver.SpanRenderFinish)(GLctx); \
- } \
- } while (0)
+/** Return SWcontext for the given GLcontext */
+static INLINE SWcontext *
+SWRAST_CONTEXT(GLcontext *ctx)
+{
+ return (SWcontext *) ctx->swrast_context;
+}
+
+/** const version of above */
+static INLINE const SWcontext *
+CONST_SWRAST_CONTEXT(const GLcontext *ctx)
+{
+ return (const SWcontext *) ctx->swrast_context;
+}
+
+
+/**
+ * Called prior to framebuffer reading/writing.
+ * For drivers that rely on swrast for fallback rendering, this is the
+ * driver's opportunity to map renderbuffers and textures.
+ */
+static INLINE void
+swrast_render_start(GLcontext *ctx)
+{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
+ if (swrast->Driver.SpanRenderStart)
+ swrast->Driver.SpanRenderStart(ctx);
+}
+
+
+/** Called after framebuffer reading/writing */
+static INLINE void
+swrast_render_finish(GLcontext *ctx)
+{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
+ if (swrast->Driver.SpanRenderFinish)
+ swrast->Driver.SpanRenderFinish(ctx);
+}
diff --git a/src/mesa/swrast/s_copypix.c b/src/mesa/swrast/s_copypix.c
index fc5990b261c..5ecfb1e90a9 100644
--- a/src/mesa/swrast/s_copypix.c
+++ b/src/mesa/swrast/s_copypix.c
@@ -899,7 +899,7 @@ _swrast_CopyPixels( GLcontext *ctx,
GLint destx, GLint desty, GLenum type )
{
SWcontext *swrast = SWRAST_CONTEXT(ctx);
- RENDER_START(swrast,ctx);
+ swrast_render_start(ctx);
if (swrast->NewState)
_swrast_validate_derived( ctx );
@@ -928,5 +928,5 @@ _swrast_CopyPixels( GLcontext *ctx,
}
}
- RENDER_FINISH(swrast,ctx);
+ swrast_render_finish(ctx);
}
diff --git a/src/mesa/swrast/s_drawpix.c b/src/mesa/swrast/s_drawpix.c
index 7af3e3dad1c..700f76d4bc4 100644
--- a/src/mesa/swrast/s_drawpix.c
+++ b/src/mesa/swrast/s_drawpix.c
@@ -830,7 +830,7 @@ _swrast_DrawPixels( GLcontext *ctx,
{
SWcontext *swrast = SWRAST_CONTEXT(ctx);
- RENDER_START(swrast,ctx);
+ swrast_render_start(ctx);
if (ctx->NewState)
_mesa_update_state(ctx);
@@ -840,7 +840,7 @@ _swrast_DrawPixels( GLcontext *ctx,
pixels = _mesa_map_drawpix_pbo(ctx, unpack, pixels);
if (!pixels) {
- RENDER_FINISH(swrast,ctx);
+ swrast_render_finish(ctx);
return;
}
@@ -879,9 +879,9 @@ _swrast_DrawPixels( GLcontext *ctx,
/* don't return yet, clean-up */
}
- RENDER_FINISH(swrast,ctx);
+ swrast_render_finish(ctx);
- _mesa_unmap_drapix_pbo(ctx, unpack);
+ _mesa_unmap_drawpix_pbo(ctx, unpack);
}
@@ -904,7 +904,7 @@ _swrast_DrawDepthPixelsMESA( GLcontext *ctx,
if (swrast->NewState)
_swrast_validate_derived( ctx );
- RENDER_START(swrast,ctx);
+ swrast_render_start(ctx);
switch (colorFormat) {
case GL_COLOR_INDEX:
@@ -933,6 +933,6 @@ _swrast_DrawDepthPixelsMESA( GLcontext *ctx,
_mesa_problem(ctx, "unexpected format in glDrawDepthPixelsMESA");
}
- RENDER_FINISH(swrast,ctx);
+ swrast_render_finish(ctx);
}
#endif
diff --git a/src/mesa/swrast/s_fog.c b/src/mesa/swrast/s_fog.c
index b9ba265db6d..77ed0cfef96 100644
--- a/src/mesa/swrast/s_fog.c
+++ b/src/mesa/swrast/s_fog.c
@@ -164,7 +164,7 @@ else { \
void
_swrast_fog_rgba_span( const GLcontext *ctx, SWspan *span )
{
- const SWcontext *swrast = SWRAST_CONTEXT(ctx);
+ const SWcontext *swrast = CONST_SWRAST_CONTEXT(ctx);
GLfloat rFog, gFog, bFog;
ASSERT(swrast->_FogEnabled);
@@ -283,7 +283,7 @@ _swrast_fog_rgba_span( const GLcontext *ctx, SWspan *span )
void
_swrast_fog_ci_span( const GLcontext *ctx, SWspan *span )
{
- const SWcontext *swrast = SWRAST_CONTEXT(ctx);
+ const SWcontext *swrast = CONST_SWRAST_CONTEXT(ctx);
const GLuint fogIndex = (GLuint) ctx->Fog.Index;
GLuint *index = span->array->index;
diff --git a/src/mesa/swrast/s_fragprog.c b/src/mesa/swrast/s_fragprog.c
index 525cf9d7245..c6601f5593d 100644
--- a/src/mesa/swrast/s_fragprog.c
+++ b/src/mesa/swrast/s_fragprog.c
@@ -33,6 +33,35 @@
/**
+ * Apply texture object's swizzle (X/Y/Z/W/0/1) to incoming 'texel'
+ * and return results in 'colorOut'.
+ */
+static INLINE void
+swizzle_texel(const GLchan texel[4], GLfloat colorOut[4], GLuint swizzle)
+{
+ if (swizzle == SWIZZLE_NOOP) {
+ colorOut[0] = CHAN_TO_FLOAT(texel[0]);
+ colorOut[1] = CHAN_TO_FLOAT(texel[1]);
+ colorOut[2] = CHAN_TO_FLOAT(texel[2]);
+ colorOut[3] = CHAN_TO_FLOAT(texel[3]);
+ }
+ else {
+ GLfloat vector[6];
+ vector[SWIZZLE_X] = CHAN_TO_FLOAT(texel[0]);
+ vector[SWIZZLE_Y] = CHAN_TO_FLOAT(texel[1]);
+ vector[SWIZZLE_Z] = CHAN_TO_FLOAT(texel[2]);
+ vector[SWIZZLE_W] = CHAN_TO_FLOAT(texel[3]);
+ vector[SWIZZLE_ZERO] = 0.0F;
+ vector[SWIZZLE_ONE] = 1.0F;
+ colorOut[0] = vector[GET_SWZ(swizzle, 0)];
+ colorOut[1] = vector[GET_SWZ(swizzle, 1)];
+ colorOut[2] = vector[GET_SWZ(swizzle, 2)];
+ colorOut[3] = vector[GET_SWZ(swizzle, 3)];
+ }
+}
+
+
+/**
* Fetch a texel with given lod.
* Called via machine->FetchTexelLod()
*/
@@ -40,20 +69,23 @@ static void
fetch_texel_lod( GLcontext *ctx, const GLfloat texcoord[4], GLfloat lambda,
GLuint unit, GLfloat color[4] )
{
- GLchan rgba[4];
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
const struct gl_texture_object *texObj = ctx->Texture.Unit[unit]._Current;
- if (texObj)
+ if (texObj) {
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
+ GLchan rgba[4];
+
lambda = CLAMP(lambda, texObj->MinLod, texObj->MaxLod);
- /* XXX use a float-valued TextureSample routine here!!! */
- swrast->TextureSample[unit](ctx, texObj, 1, (const GLfloat (*)[4]) texcoord,
- &lambda, &rgba);
- color[0] = CHAN_TO_FLOAT(rgba[0]);
- color[1] = CHAN_TO_FLOAT(rgba[1]);
- color[2] = CHAN_TO_FLOAT(rgba[2]);
- color[3] = CHAN_TO_FLOAT(rgba[3]);
+ /* XXX use a float-valued TextureSample routine here!!! */
+ swrast->TextureSample[unit](ctx, texObj, 1,
+ (const GLfloat (*)[4]) texcoord,
+ &lambda, &rgba);
+ swizzle_texel(rgba, color, texObj->_Swizzle);
+ }
+ else {
+ ASSIGN_4V(color, 0.0F, 0.0F, 0.0F, 1.0F);
+ }
}
@@ -69,13 +101,14 @@ fetch_texel_deriv( GLcontext *ctx, const GLfloat texcoord[4],
{
SWcontext *swrast = SWRAST_CONTEXT(ctx);
const struct gl_texture_object *texObj = ctx->Texture.Unit[unit]._Current;
- GLfloat lambda;
- GLchan rgba[4];
if (texObj) {
- const struct gl_texture_image *texImg = texObj->Image[0][texObj->BaseLevel];
+ const struct gl_texture_image *texImg =
+ texObj->Image[0][texObj->BaseLevel];
const GLfloat texW = (GLfloat) texImg->WidthScale;
const GLfloat texH = (GLfloat) texImg->HeightScale;
+ GLfloat lambda;
+ GLchan rgba[4];
lambda = _swrast_compute_lambda(texdx[0], texdy[0], /* ds/dx, ds/dy */
texdx[1], texdy[1], /* dt/dx, dt/dy */
@@ -85,14 +118,16 @@ fetch_texel_deriv( GLcontext *ctx, const GLfloat texcoord[4],
1.0F / texcoord[3]) + lodBias;
lambda = CLAMP(lambda, texObj->MinLod, texObj->MaxLod);
- }
- swrast->TextureSample[unit](ctx, texObj, 1, (const GLfloat (*)[4]) texcoord,
- &lambda, &rgba);
- color[0] = CHAN_TO_FLOAT(rgba[0]);
- color[1] = CHAN_TO_FLOAT(rgba[1]);
- color[2] = CHAN_TO_FLOAT(rgba[2]);
- color[3] = CHAN_TO_FLOAT(rgba[3]);
+ /* XXX use a float-valued TextureSample routine here!!! */
+ swrast->TextureSample[unit](ctx, texObj, 1,
+ (const GLfloat (*)[4]) texcoord,
+ &lambda, &rgba);
+ swizzle_texel(rgba, color, texObj->_Swizzle);
+ }
+ else {
+ ASSIGN_4V(color, 0.0F, 0.0F, 0.0F, 1.0F);
+ }
}
diff --git a/src/mesa/swrast/s_imaging.c b/src/mesa/swrast/s_imaging.c
index 591857c3423..d6be3aa022e 100644
--- a/src/mesa/swrast/s_imaging.c
+++ b/src/mesa/swrast/s_imaging.c
@@ -39,7 +39,6 @@ _swrast_CopyColorTable( GLcontext *ctx,
GLenum target, GLenum internalformat,
GLint x, GLint y, GLsizei width)
{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLchan data[MAX_WIDTH][4];
struct gl_buffer_object *bufferSave;
@@ -51,13 +50,13 @@ _swrast_CopyColorTable( GLcontext *ctx,
if (width > MAX_WIDTH)
width = MAX_WIDTH;
- RENDER_START( swrast, ctx );
+ swrast_render_start(ctx);
/* read the data from framebuffer */
_swrast_read_rgba_span( ctx, ctx->ReadBuffer->_ColorReadBuffer,
width, x, y, CHAN_TYPE, data );
- RENDER_FINISH(swrast,ctx);
+ swrast_render_finish(ctx);
/* save PBO binding */
bufferSave = ctx->Unpack.BufferObj;
@@ -74,7 +73,6 @@ void
_swrast_CopyColorSubTable( GLcontext *ctx,GLenum target, GLsizei start,
GLint x, GLint y, GLsizei width)
{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLchan data[MAX_WIDTH][4];
struct gl_buffer_object *bufferSave;
@@ -86,13 +84,13 @@ _swrast_CopyColorSubTable( GLcontext *ctx,GLenum target, GLsizei start,
if (width > MAX_WIDTH)
width = MAX_WIDTH;
- RENDER_START( swrast, ctx );
+ swrast_render_start(ctx);
/* read the data from framebuffer */
_swrast_read_rgba_span( ctx, ctx->ReadBuffer->_ColorReadBuffer,
width, x, y, CHAN_TYPE, data );
- RENDER_FINISH(swrast,ctx);
+ swrast_render_finish(ctx);
/* save PBO binding */
bufferSave = ctx->Unpack.BufferObj;
@@ -110,7 +108,6 @@ _swrast_CopyConvolutionFilter1D(GLcontext *ctx, GLenum target,
GLenum internalFormat,
GLint x, GLint y, GLsizei width)
{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLchan rgba[MAX_CONVOLUTION_WIDTH][4];
struct gl_buffer_object *bufferSave;
@@ -119,13 +116,13 @@ _swrast_CopyConvolutionFilter1D(GLcontext *ctx, GLenum target,
return;
}
- RENDER_START( swrast, ctx );
+ swrast_render_start(ctx);
/* read the data from framebuffer */
_swrast_read_rgba_span( ctx, ctx->ReadBuffer->_ColorReadBuffer,
width, x, y, CHAN_TYPE, rgba );
- RENDER_FINISH( swrast, ctx );
+ swrast_render_finish(ctx);
/* save PBO binding */
bufferSave = ctx->Unpack.BufferObj;
@@ -145,7 +142,6 @@ _swrast_CopyConvolutionFilter2D(GLcontext *ctx, GLenum target,
GLenum internalFormat,
GLint x, GLint y, GLsizei width, GLsizei height)
{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
struct gl_pixelstore_attrib packSave;
GLchan rgba[MAX_CONVOLUTION_HEIGHT][MAX_CONVOLUTION_WIDTH][4];
GLint i;
@@ -156,7 +152,7 @@ _swrast_CopyConvolutionFilter2D(GLcontext *ctx, GLenum target,
return;
}
- RENDER_START(swrast,ctx);
+ swrast_render_start(ctx);
/* read pixels from framebuffer */
for (i = 0; i < height; i++) {
@@ -164,7 +160,7 @@ _swrast_CopyConvolutionFilter2D(GLcontext *ctx, GLenum target,
width, x, y + i, CHAN_TYPE, rgba[i] );
}
- RENDER_FINISH(swrast,ctx);
+ swrast_render_finish(ctx);
/*
* HACK: save & restore context state so we can store this as a
diff --git a/src/mesa/swrast/s_readpix.c b/src/mesa/swrast/s_readpix.c
index f2630451707..e901fc6b5dc 100644
--- a/src/mesa/swrast/s_readpix.c
+++ b/src/mesa/swrast/s_readpix.c
@@ -555,11 +555,11 @@ _swrast_ReadPixels( GLcontext *ctx,
SWcontext *swrast = SWRAST_CONTEXT(ctx);
struct gl_pixelstore_attrib clippedPacking = *packing;
- /* Need to do RENDER_START before clipping or anything else since this
- * is where a driver may grab the hw lock and get an updated window
- * size.
+ /* Need to do swrast_render_start() before clipping or anything else
+ * since this is where a driver may grab the hw lock and get an updated
+ * window size.
*/
- RENDER_START(swrast, ctx);
+ swrast_render_start(ctx);
if (ctx->NewState)
_mesa_update_state(ctx);
@@ -570,7 +570,7 @@ _swrast_ReadPixels( GLcontext *ctx,
/* Do all needed clipping here, so that we can forget about it later */
if (!_mesa_clip_readpixels(ctx, &x, &y, &width, &height, &clippedPacking)) {
/* The ReadPixels region is totally outside the window bounds */
- RENDER_FINISH(swrast, ctx);
+ swrast_render_finish(ctx);
return;
}
@@ -614,7 +614,7 @@ _swrast_ReadPixels( GLcontext *ctx,
/* don't return yet, clean-up */
}
- RENDER_FINISH(swrast, ctx);
+ swrast_render_finish(ctx);
_mesa_unmap_readpix_pbo(ctx, &clippedPacking);
}
diff --git a/src/mesa/swrast/s_span.c b/src/mesa/swrast/s_span.c
index 214c2a1b6f3..ab7b82b19d9 100644
--- a/src/mesa/swrast/s_span.c
+++ b/src/mesa/swrast/s_span.c
@@ -1032,6 +1032,7 @@ add_specular(GLcontext *ctx, SWspan *span)
ASSERT(!ctx->FragmentProgram._Current);
ASSERT(span->arrayMask & SPAN_RGBA);
ASSERT(swrast->_ActiveAttribMask & FRAG_BIT_COL1);
+ (void) swrast; /* silence warning */
if (span->array->ChanType == GL_FLOAT) {
if ((span->arrayAttribs & FRAG_BIT_COL0) == 0) {
@@ -1310,6 +1311,7 @@ _swrast_write_rgba_span( GLcontext *ctx, SWspan *span)
/* Do the alpha test */
if (ctx->Color.AlphaEnabled) {
if (!_swrast_alpha_test(ctx, span)) {
+ /* all fragments failed test */
goto end;
}
}
@@ -1322,6 +1324,7 @@ _swrast_write_rgba_span( GLcontext *ctx, SWspan *span)
if (ctx->Stencil.Enabled && fb->Visual.stencilBits > 0) {
/* Combined Z/stencil tests */
if (!_swrast_stencil_and_ztest_span(ctx, span)) {
+ /* all fragments failed test */
goto end;
}
}
@@ -1330,6 +1333,7 @@ _swrast_write_rgba_span( GLcontext *ctx, SWspan *span)
ASSERT(ctx->Depth.Test);
ASSERT(span->arrayMask & SPAN_Z);
if (!_swrast_depth_test_span(ctx, span)) {
+ /* all fragments failed test */
goto end;
}
}
@@ -1349,6 +1353,7 @@ _swrast_write_rgba_span( GLcontext *ctx, SWspan *span)
* the occlusion test.
*/
if (colorMask == 0x0) {
+ /* no colors to write */
goto end;
}
diff --git a/src/mesa/swrast/s_stencil.c b/src/mesa/swrast/s_stencil.c
index c925922463e..2e84ddec71f 100644
--- a/src/mesa/swrast/s_stencil.c
+++ b/src/mesa/swrast/s_stencil.c
@@ -997,10 +997,12 @@ stencil_and_ztest_pixels( GLcontext *ctx, SWspan *span, GLuint face )
GLboolean
_swrast_stencil_and_ztest_span(GLcontext *ctx, SWspan *span)
{
+ const GLuint face = (span->facing == 0) ? 0 : ctx->Stencil._BackFace;
+
if (span->arrayMask & SPAN_XY)
- return stencil_and_ztest_pixels(ctx, span, span->facing);
+ return stencil_and_ztest_pixels(ctx, span, face);
else
- return stencil_and_ztest_span(ctx, span, span->facing);
+ return stencil_and_ztest_span(ctx, span, face);
}
diff --git a/src/mesa/swrast/s_texcombine.c b/src/mesa/swrast/s_texcombine.c
index 632d650007e..38b5633887f 100644
--- a/src/mesa/swrast/s_texcombine.c
+++ b/src/mesa/swrast/s_texcombine.c
@@ -1,8 +1,9 @@
/*
* Mesa 3-D graphics library
- * Version: 6.5.1
+ * Version: 7.5
*
- * Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
+ * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
@@ -30,6 +31,7 @@
#include "main/imports.h"
#include "main/macros.h"
#include "main/pixel.h"
+#include "shader/prog_instruction.h"
#include "s_context.h"
#include "s_texcombine.h"
@@ -66,9 +68,9 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
GLchan (*rgba)[4] )
{
const struct gl_texture_unit *textureUnit = &(ctx->Texture.Unit[unit]);
- const GLchan (*argRGB [3])[4];
- const GLchan (*argA [3])[4];
- const GLuint RGBshift = textureUnit->_CurrentCombine->ScaleShiftRGB;
+ const GLchan (*argRGB [4])[4];
+ const GLchan (*argA [4])[4];
+ const GLint RGBshift = textureUnit->_CurrentCombine->ScaleShiftRGB;
const GLuint Ashift = textureUnit->_CurrentCombine->ScaleShiftA;
#if CHAN_TYPE == GL_FLOAT
const GLchan RGBmult = (GLfloat) (1 << RGBshift);
@@ -80,12 +82,12 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
static const GLchan zero[4] = { 0, 0, 0, 0 };
const GLuint numColorArgs = textureUnit->_CurrentCombine->_NumArgsRGB;
const GLuint numAlphaArgs = textureUnit->_CurrentCombine->_NumArgsA;
- GLchan ccolor[3][MAX_WIDTH][4];
+ GLchan ccolor[4][MAX_WIDTH][4];
GLuint i, j;
ASSERT(ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine);
- ASSERT(SWRAST_CONTEXT(ctx)->_AnyTextureCombine);
+ ASSERT(CONST_SWRAST_CONTEXT(ctx)->_AnyTextureCombine);
/*
printf("modeRGB 0x%x modeA 0x%x srcRGB1 0x%x srcA1 0x%x srcRGB2 0x%x srcA2 0x%x\n",
@@ -98,7 +100,7 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
*/
/*
- * Do operand setup for up to 3 operands. Loop over the terms.
+ * Do operand setup for up to 4 operands. Loop over the terms.
*/
for (j = 0; j < numColorArgs; j++) {
const GLenum srcRGB = textureUnit->_CurrentCombine->SourceRGB[j];
@@ -295,7 +297,36 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
}
break;
case GL_ADD:
- {
+ if (textureUnit->EnvMode == GL_COMBINE4_NV) {
+ /* (a * b) + (c * d) */
+ const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0];
+ const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1];
+ const GLchan (*arg2)[4] = (const GLchan (*)[4]) argRGB[2];
+ const GLchan (*arg3)[4] = (const GLchan (*)[4]) argRGB[3];
+ for (i = 0; i < n; i++) {
+#if CHAN_TYPE == GL_FLOAT
+ rgba[i][RCOMP] = (arg0[i][RCOMP] * arg1[i][RCOMP] +
+ arg2[i][RCOMP] * arg3[i][RCOMP]) * RGBmult;
+ rgba[i][GCOMP] = (arg0[i][GCOMP] * arg1[i][GCOMP] +
+ arg2[i][GCOMP] * arg3[i][GCOMP]) * RGBmult;
+ rgba[i][BCOMP] = (arg0[i][BCOMP] * arg1[i][BCOMP] +
+ arg2[i][BCOMP] * arg3[i][BCOMP]) * RGBmult;
+#else
+ const GLint shift = CHAN_BITS - RGBshift;
+ GLint r = (PROD(arg0[i][RCOMP], arg1[i][RCOMP]) >> shift) +
+ (PROD(arg2[i][RCOMP], arg3[i][RCOMP]) >> shift);
+ GLint g = (PROD(arg0[i][GCOMP], arg1[i][GCOMP]) >> shift) +
+ (PROD(arg2[i][GCOMP], arg3[i][GCOMP]) >> shift);
+ GLint b = (PROD(arg0[i][BCOMP], arg1[i][BCOMP]) >> shift) +
+ (PROD(arg2[i][BCOMP], arg3[i][BCOMP]) >> shift);
+ rgba[i][RCOMP] = (GLchan) MIN2(r, CHAN_MAX);
+ rgba[i][GCOMP] = (GLchan) MIN2(g, CHAN_MAX);
+ rgba[i][BCOMP] = (GLchan) MIN2(b, CHAN_MAX);
+#endif
+ }
+ }
+ else {
+ /* 2-term addition */
const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0];
const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1];
for (i = 0; i < n; i++) {
@@ -315,7 +346,37 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
}
break;
case GL_ADD_SIGNED:
- {
+ if (textureUnit->EnvMode == GL_COMBINE4_NV) {
+ /* (a * b) + (c * d) - 0.5 */
+ const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0];
+ const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1];
+ const GLchan (*arg2)[4] = (const GLchan (*)[4]) argRGB[2];
+ const GLchan (*arg3)[4] = (const GLchan (*)[4]) argRGB[3];
+ for (i = 0; i < n; i++) {
+#if CHAN_TYPE == GL_FLOAT
+ rgba[i][RCOMP] = (arg0[i][RCOMP] + arg1[i][RCOMP] *
+ arg2[i][RCOMP] + arg3[i][RCOMP] - 0.5) * RGBmult;
+ rgba[i][GCOMP] = (arg0[i][GCOMP] + arg1[i][GCOMP] *
+ arg2[i][GCOMP] + arg3[i][GCOMP] - 0.5) * RGBmult;
+ rgba[i][BCOMP] = (arg0[i][BCOMP] + arg1[i][BCOMP] *
+ arg2[i][BCOMP] + arg3[i][BCOMP] - 0.5) * RGBmult;
+#else
+ GLint r = (((PROD(arg0[i][RCOMP], arg1[i][RCOMP]) +
+ PROD(arg2[i][RCOMP], arg3[i][RCOMP])) >> CHAN_BITS) - half)
+ << RGBshift;
+ GLint g = (((PROD(arg0[i][GCOMP], arg1[i][GCOMP]) +
+ PROD(arg2[i][GCOMP], arg3[i][GCOMP])) >> CHAN_BITS) - half)
+ << RGBshift;
+ GLint b = (((PROD(arg0[i][BCOMP], arg1[i][BCOMP]) +
+ PROD(arg2[i][BCOMP], arg3[i][BCOMP])) >> CHAN_BITS) - half)
+ << RGBshift;
+ rgba[i][RCOMP] = (GLchan) CLAMP(r, 0, CHAN_MAX);
+ rgba[i][GCOMP] = (GLchan) CLAMP(g, 0, CHAN_MAX);
+ rgba[i][BCOMP] = (GLchan) CLAMP(b, 0, CHAN_MAX);
+#endif
+ }
+ }
+ else {
const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0];
const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1];
for (i = 0; i < n; i++) {
@@ -324,9 +385,9 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
rgba[i][GCOMP] = (arg0[i][GCOMP] + arg1[i][GCOMP] - 0.5) * RGBmult;
rgba[i][BCOMP] = (arg0[i][BCOMP] + arg1[i][BCOMP] - 0.5) * RGBmult;
#else
- GLint r = (GLint) arg0[i][RCOMP] + (GLint) arg1[i][RCOMP] -half;
- GLint g = (GLint) arg0[i][GCOMP] + (GLint) arg1[i][GCOMP] -half;
- GLint b = (GLint) arg0[i][BCOMP] + (GLint) arg1[i][BCOMP] -half;
+ GLint r = (GLint) arg0[i][RCOMP] + (GLint) arg1[i][RCOMP] - half;
+ GLint g = (GLint) arg0[i][GCOMP] + (GLint) arg1[i][GCOMP] - half;
+ GLint b = (GLint) arg0[i][BCOMP] + (GLint) arg1[i][BCOMP] - half;
r = (r < 0) ? 0 : r << RGBshift;
g = (g < 0) ? 0 : g << RGBshift;
b = (b < 0) ? 0 : b << RGBshift;
@@ -573,9 +634,28 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
}
break;
case GL_ADD:
- {
+ if (textureUnit->EnvMode == GL_COMBINE4_NV) {
+ /* (a * b) + (c * d) */
const GLchan (*arg0)[4] = (const GLchan (*)[4]) argA[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1];
+ const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1];
+ const GLchan (*arg2)[4] = (const GLchan (*)[4]) argA[2];
+ const GLchan (*arg3)[4] = (const GLchan (*)[4]) argA[3];
+ for (i = 0; i < n; i++) {
+#if CHAN_TYPE == GL_FLOAT
+ rgba[i][ACOMP] = (arg0[i][ACOMP] * arg1[i][ACOMP] +
+ arg2[i][ACOMP] * arg3[i][ACOMP]) * Amult;
+#else
+ const GLint shift = CHAN_BITS - Ashift;
+ GLint a = (PROD(arg0[i][ACOMP], arg1[i][ACOMP]) >> shift) +
+ (PROD(arg2[i][ACOMP], arg3[i][ACOMP]) >> shift);
+ rgba[i][ACOMP] = (GLchan) MIN2(a, CHAN_MAX);
+#endif
+ }
+ }
+ else {
+ /* two-term add */
+ const GLchan (*arg0)[4] = (const GLchan (*)[4]) argA[0];
+ const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1];
for (i = 0; i < n; i++) {
#if CHAN_TYPE == GL_FLOAT
rgba[i][ACOMP] = (arg0[i][ACOMP] + arg1[i][ACOMP]) * Amult;
@@ -587,7 +667,27 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
}
break;
case GL_ADD_SIGNED:
- {
+ if (textureUnit->EnvMode == GL_COMBINE4_NV) {
+ /* (a * b) + (c * d) - 0.5 */
+ const GLchan (*arg0)[4] = (const GLchan (*)[4]) argA[0];
+ const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1];
+ const GLchan (*arg2)[4] = (const GLchan (*)[4]) argA[2];
+ const GLchan (*arg3)[4] = (const GLchan (*)[4]) argA[3];
+ for (i = 0; i < n; i++) {
+#if CHAN_TYPE == GL_FLOAT
+ rgba[i][ACOMP] = (arg0[i][ACOMP] * arg1[i][ACOMP] +
+ arg2[i][ACOMP] * arg3[i][ACOMP] -
+ 0.5) * Amult;
+#else
+ GLint a = (((PROD(arg0[i][ACOMP], arg1[i][ACOMP]) +
+ PROD(arg2[i][ACOMP], arg3[i][ACOMP])) >> CHAN_BITS) - half)
+ << Ashift;
+ rgba[i][ACOMP] = (GLchan) CLAMP(a, 0, CHAN_MAX);
+#endif
+ }
+ }
+ else {
+ /* a + b - 0.5 */
const GLchan (*arg0)[4] = (const GLchan (*)[4]) argA[0];
const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1];
for (i = 0; i < n; i++) {
@@ -596,7 +696,7 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
#else
GLint a = (GLint) arg0[i][ACOMP] + (GLint) arg1[i][ACOMP] -half;
a = (a < 0) ? 0 : a << Ashift;
- rgba[i][ACOMP] = (GLchan) MIN2(a, CHAN_MAX);
+ rgba[i][ACOMP] = (GLchan) CLAMP(a, 0, CHAN_MAX);
#endif
}
}
@@ -717,6 +817,36 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
/**
+ * Apply X/Y/Z/W/0/1 swizzle to an array of colors/texels.
+ * See GL_EXT_texture_swizzle.
+ */
+static void
+swizzle_texels(GLuint swizzle, GLuint count, GLchan (*texels)[4])
+{
+ const GLuint swzR = GET_SWZ(swizzle, 0);
+ const GLuint swzG = GET_SWZ(swizzle, 1);
+ const GLuint swzB = GET_SWZ(swizzle, 2);
+ const GLuint swzA = GET_SWZ(swizzle, 3);
+ GLchan vector[6];
+ GLuint i;
+
+ vector[SWIZZLE_ZERO] = 0;
+ vector[SWIZZLE_ONE] = CHAN_MAX;
+
+ for (i = 0; i < count; i++) {
+ vector[SWIZZLE_X] = texels[i][0];
+ vector[SWIZZLE_Y] = texels[i][1];
+ vector[SWIZZLE_Z] = texels[i][2];
+ vector[SWIZZLE_W] = texels[i][3];
+ texels[i][RCOMP] = vector[swzR];
+ texels[i][GCOMP] = vector[swzG];
+ texels[i][BCOMP] = vector[swzB];
+ texels[i][ACOMP] = vector[swzA];
+ }
+}
+
+
+/**
* Apply a conventional OpenGL texture env mode (REPLACE, ADD, BLEND,
* MODULATE, or DECAL) to an array of fragments.
* Input: textureUnit - pointer to texture unit to apply
@@ -1142,9 +1272,15 @@ _swrast_texture_span( GLcontext *ctx, SWspan *span )
_mesa_lookup_rgba_float(&texUnit->ColorTable, span->end, texels);
#endif
}
+
+ /* GL_EXT_texture_swizzle */
+ if (curObj->_Swizzle != SWIZZLE_NOOP) {
+ swizzle_texels(curObj->_Swizzle, span->end, texels);
+ }
}
}
+
/*
* OK, now apply the texture (aka texture combine/blend).
* We modify the span->color.rgba values.
@@ -1163,6 +1299,8 @@ _swrast_texture_span( GLcontext *ctx, SWspan *span )
const GLchan (*texels)[4] = (const GLchan (*)[4])
(swrast->TexelBuffer + unit *
(span->end * 4 * sizeof(GLchan)));
+
+
texture_apply( ctx, texUnit, span->end,
(CONST GLchan (*)[4]) primary_rgba, texels,
span->array->rgba );
diff --git a/src/mesa/swrast/s_texfilter.c b/src/mesa/swrast/s_texfilter.c
index 9e44fba3daf..8d72018cf4f 100644
--- a/src/mesa/swrast/s_texfilter.c
+++ b/src/mesa/swrast/s_texfilter.c
@@ -1,8 +1,8 @@
/*
* Mesa 3-D graphics library
- * Version: 7.0.3
+ * Version: 7.3
*
- * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
@@ -33,6 +33,16 @@
#include "s_texfilter.h"
+/*
+ * Note, the FRAC macro has to work perfectly. Otherwise you'll sometimes
+ * see 1-pixel bands of improperly weighted linear-filtered textures.
+ * The tests/texwrap.c demo is a good test.
+ * Also note, FRAC(x) doesn't truly return the fractional part of x for x < 0.
+ * Instead, if x < 0 then FRAC(x) = 1 - true_frac(x).
+ */
+#define FRAC(f) ((f) - IFLOOR(f))
+
+
/**
* Constants for integer linear interpolation.
*/
@@ -223,257 +233,271 @@ lerp_rgba_3d(GLchan result[4], GLfloat a, GLfloat b, GLfloat c,
* Used to compute texel locations for linear sampling.
* Input:
* wrapMode = GL_REPEAT, GL_CLAMP, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_BORDER
- * S = texcoord in [0,1]
- * SIZE = width (or height or depth) of texture
+ * s = texcoord in [0,1]
+ * size = width (or height or depth) of texture
* Output:
- * U = texcoord in [0, width]
- * I0, I1 = two nearest texel indexes
+ * i0, i1 = returns two nearest texel indexes
+ * weight = returns blend factor between texels
*/
-#define COMPUTE_LINEAR_TEXEL_LOCATIONS(wrapMode, S, U, SIZE, I0, I1) \
-{ \
- switch (wrapMode) { \
- case GL_REPEAT: \
- U = S * SIZE - 0.5F; \
- if (img->_IsPowerOfTwo) { \
- I0 = IFLOOR(U) & (SIZE - 1); \
- I1 = (I0 + 1) & (SIZE - 1); \
- } \
- else { \
- I0 = REMAINDER(IFLOOR(U), SIZE); \
- I1 = REMAINDER(I0 + 1, SIZE); \
- } \
- break; \
- case GL_CLAMP_TO_EDGE: \
- if (S <= 0.0F) \
- U = 0.0F; \
- else if (S >= 1.0F) \
- U = (GLfloat) SIZE; \
- else \
- U = S * SIZE; \
- U -= 0.5F; \
- I0 = IFLOOR(U); \
- I1 = I0 + 1; \
- if (I0 < 0) \
- I0 = 0; \
- if (I1 >= (GLint) SIZE) \
- I1 = SIZE - 1; \
- break; \
- case GL_CLAMP_TO_BORDER: \
- { \
- const GLfloat min = -1.0F / (2.0F * SIZE); \
- const GLfloat max = 1.0F - min; \
- if (S <= min) \
- U = min * SIZE; \
- else if (S >= max) \
- U = max * SIZE; \
- else \
- U = S * SIZE; \
- U -= 0.5F; \
- I0 = IFLOOR(U); \
- I1 = I0 + 1; \
- } \
- break; \
- case GL_MIRRORED_REPEAT: \
- { \
- const GLint flr = IFLOOR(S); \
- if (flr & 1) \
- U = 1.0F - (S - (GLfloat) flr); /* flr is odd */ \
- else \
- U = S - (GLfloat) flr; /* flr is even */ \
- U = (U * SIZE) - 0.5F; \
- I0 = IFLOOR(U); \
- I1 = I0 + 1; \
- if (I0 < 0) \
- I0 = 0; \
- if (I1 >= (GLint) SIZE) \
- I1 = SIZE - 1; \
- } \
- break; \
- case GL_MIRROR_CLAMP_EXT: \
- U = FABSF(S); \
- if (U >= 1.0F) \
- U = (GLfloat) SIZE; \
- else \
- U *= SIZE; \
- U -= 0.5F; \
- I0 = IFLOOR(U); \
- I1 = I0 + 1; \
- break; \
- case GL_MIRROR_CLAMP_TO_EDGE_EXT: \
- U = FABSF(S); \
- if (U >= 1.0F) \
- U = (GLfloat) SIZE; \
- else \
- U *= SIZE; \
- U -= 0.5F; \
- I0 = IFLOOR(U); \
- I1 = I0 + 1; \
- if (I0 < 0) \
- I0 = 0; \
- if (I1 >= (GLint) SIZE) \
- I1 = SIZE - 1; \
- break; \
- case GL_MIRROR_CLAMP_TO_BORDER_EXT: \
- { \
- const GLfloat min = -1.0F / (2.0F * SIZE); \
- const GLfloat max = 1.0F - min; \
- U = FABSF(S); \
- if (U <= min) \
- U = min * SIZE; \
- else if (U >= max) \
- U = max * SIZE; \
- else \
- U *= SIZE; \
- U -= 0.5F; \
- I0 = IFLOOR(U); \
- I1 = I0 + 1; \
- } \
- break; \
- case GL_CLAMP: \
- if (S <= 0.0F) \
- U = 0.0F; \
- else if (S >= 1.0F) \
- U = (GLfloat) SIZE; \
- else \
- U = S * SIZE; \
- U -= 0.5F; \
- I0 = IFLOOR(U); \
- I1 = I0 + 1; \
- break; \
- default: \
- _mesa_problem(ctx, "Bad wrap mode"); \
- return; \
- } \
+static INLINE void
+linear_texel_locations(GLenum wrapMode,
+ const struct gl_texture_image *img,
+ GLint size, GLfloat s,
+ GLint *i0, GLint *i1, GLfloat *weight)
+{
+ GLfloat u;
+ switch (wrapMode) {
+ case GL_REPEAT:
+ u = s * size - 0.5F;
+ if (img->_IsPowerOfTwo) {
+ *i0 = IFLOOR(u) & (size - 1);
+ *i1 = (*i0 + 1) & (size - 1);
+ }
+ else {
+ *i0 = REMAINDER(IFLOOR(u), size);
+ *i1 = REMAINDER(*i0 + 1, size);
+ }
+ break;
+ case GL_CLAMP_TO_EDGE:
+ if (s <= 0.0F)
+ u = 0.0F;
+ else if (s >= 1.0F)
+ u = (GLfloat) size;
+ else
+ u = s * size;
+ u -= 0.5F;
+ *i0 = IFLOOR(u);
+ *i1 = *i0 + 1;
+ if (*i0 < 0)
+ *i0 = 0;
+ if (*i1 >= (GLint) size)
+ *i1 = size - 1;
+ break;
+ case GL_CLAMP_TO_BORDER:
+ {
+ const GLfloat min = -1.0F / (2.0F * size);
+ const GLfloat max = 1.0F - min;
+ if (s <= min)
+ u = min * size;
+ else if (s >= max)
+ u = max * size;
+ else
+ u = s * size;
+ u -= 0.5F;
+ *i0 = IFLOOR(u);
+ *i1 = *i0 + 1;
+ }
+ break;
+ case GL_MIRRORED_REPEAT:
+ {
+ const GLint flr = IFLOOR(s);
+ if (flr & 1)
+ u = 1.0F - (s - (GLfloat) flr);
+ else
+ u = s - (GLfloat) flr;
+ u = (u * size) - 0.5F;
+ *i0 = IFLOOR(u);
+ *i1 = *i0 + 1;
+ if (*i0 < 0)
+ *i0 = 0;
+ if (*i1 >= (GLint) size)
+ *i1 = size - 1;
+ }
+ break;
+ case GL_MIRROR_CLAMP_EXT:
+ u = FABSF(s);
+ if (u >= 1.0F)
+ u = (GLfloat) size;
+ else
+ u *= size;
+ u -= 0.5F;
+ *i0 = IFLOOR(u);
+ *i1 = *i0 + 1;
+ break;
+ case GL_MIRROR_CLAMP_TO_EDGE_EXT:
+ u = FABSF(s);
+ if (u >= 1.0F)
+ u = (GLfloat) size;
+ else
+ u *= size;
+ u -= 0.5F;
+ *i0 = IFLOOR(u);
+ *i1 = *i0 + 1;
+ if (*i0 < 0)
+ *i0 = 0;
+ if (*i1 >= (GLint) size)
+ *i1 = size - 1;
+ break;
+ case GL_MIRROR_CLAMP_TO_BORDER_EXT:
+ {
+ const GLfloat min = -1.0F / (2.0F * size);
+ const GLfloat max = 1.0F - min;
+ u = FABSF(s);
+ if (u <= min)
+ u = min * size;
+ else if (u >= max)
+ u = max * size;
+ else
+ u *= size;
+ u -= 0.5F;
+ *i0 = IFLOOR(u);
+ *i1 = *i0 + 1;
+ }
+ break;
+ case GL_CLAMP:
+ if (s <= 0.0F)
+ u = 0.0F;
+ else if (s >= 1.0F)
+ u = (GLfloat) size;
+ else
+ u = s * size;
+ u -= 0.5F;
+ *i0 = IFLOOR(u);
+ *i1 = *i0 + 1;
+ break;
+ default:
+ _mesa_problem(NULL, "Bad wrap mode");
+ u = 0.0F;
+ }
+ *weight = FRAC(u);
}
/**
* Used to compute texel location for nearest sampling.
*/
-#define COMPUTE_NEAREST_TEXEL_LOCATION(wrapMode, S, SIZE, I) \
-{ \
- switch (wrapMode) { \
- case GL_REPEAT: \
- /* s limited to [0,1) */ \
- /* i limited to [0,size-1] */ \
- I = IFLOOR(S * SIZE); \
- if (img->_IsPowerOfTwo) \
- I &= (SIZE - 1); \
- else \
- I = REMAINDER(I, SIZE); \
- break; \
- case GL_CLAMP_TO_EDGE: \
- { \
- /* s limited to [min,max] */ \
- /* i limited to [0, size-1] */ \
- const GLfloat min = 1.0F / (2.0F * SIZE); \
- const GLfloat max = 1.0F - min; \
- if (S < min) \
- I = 0; \
- else if (S > max) \
- I = SIZE - 1; \
- else \
- I = IFLOOR(S * SIZE); \
- } \
- break; \
- case GL_CLAMP_TO_BORDER: \
- { \
- /* s limited to [min,max] */ \
- /* i limited to [-1, size] */ \
- const GLfloat min = -1.0F / (2.0F * SIZE); \
- const GLfloat max = 1.0F - min; \
- if (S <= min) \
- I = -1; \
- else if (S >= max) \
- I = SIZE; \
- else \
- I = IFLOOR(S * SIZE); \
- } \
- break; \
- case GL_MIRRORED_REPEAT: \
- { \
- const GLfloat min = 1.0F / (2.0F * SIZE); \
- const GLfloat max = 1.0F - min; \
- const GLint flr = IFLOOR(S); \
- GLfloat u; \
- if (flr & 1) \
- u = 1.0F - (S - (GLfloat) flr); /* flr is odd */ \
- else \
- u = S - (GLfloat) flr; /* flr is even */ \
- if (u < min) \
- I = 0; \
- else if (u > max) \
- I = SIZE - 1; \
- else \
- I = IFLOOR(u * SIZE); \
- } \
- break; \
- case GL_MIRROR_CLAMP_EXT: \
- { \
- /* s limited to [0,1] */ \
- /* i limited to [0,size-1] */ \
- const GLfloat u = FABSF(S); \
- if (u <= 0.0F) \
- I = 0; \
- else if (u >= 1.0F) \
- I = SIZE - 1; \
- else \
- I = IFLOOR(u * SIZE); \
- } \
- break; \
- case GL_MIRROR_CLAMP_TO_EDGE_EXT: \
- { \
- /* s limited to [min,max] */ \
- /* i limited to [0, size-1] */ \
- const GLfloat min = 1.0F / (2.0F * SIZE); \
- const GLfloat max = 1.0F - min; \
- const GLfloat u = FABSF(S); \
- if (u < min) \
- I = 0; \
- else if (u > max) \
- I = SIZE - 1; \
- else \
- I = IFLOOR(u * SIZE); \
- } \
- break; \
- case GL_MIRROR_CLAMP_TO_BORDER_EXT: \
- { \
- /* s limited to [min,max] */ \
- /* i limited to [0, size-1] */ \
- const GLfloat min = -1.0F / (2.0F * SIZE); \
- const GLfloat max = 1.0F - min; \
- const GLfloat u = FABSF(S); \
- if (u < min) \
- I = -1; \
- else if (u > max) \
- I = SIZE; \
- else \
- I = IFLOOR(u * SIZE); \
- } \
- break; \
- case GL_CLAMP: \
- /* s limited to [0,1] */ \
- /* i limited to [0,size-1] */ \
- if (S <= 0.0F) \
- I = 0; \
- else if (S >= 1.0F) \
- I = SIZE - 1; \
- else \
- I = IFLOOR(S * SIZE); \
- break; \
- default: \
- _mesa_problem(ctx, "Bad wrap mode"); \
- return; \
- } \
+static INLINE GLint
+nearest_texel_location(GLenum wrapMode,
+ const struct gl_texture_image *img,
+ GLint size, GLfloat s)
+{
+ GLint i;
+
+ switch (wrapMode) {
+ case GL_REPEAT:
+ /* s limited to [0,1) */
+ /* i limited to [0,size-1] */
+ i = IFLOOR(s * size);
+ if (img->_IsPowerOfTwo)
+ i &= (size - 1);
+ else
+ i = REMAINDER(i, size);
+ return i;
+ case GL_CLAMP_TO_EDGE:
+ {
+ /* s limited to [min,max] */
+ /* i limited to [0, size-1] */
+ const GLfloat min = 1.0F / (2.0F * size);
+ const GLfloat max = 1.0F - min;
+ if (s < min)
+ i = 0;
+ else if (s > max)
+ i = size - 1;
+ else
+ i = IFLOOR(s * size);
+ }
+ return i;
+ case GL_CLAMP_TO_BORDER:
+ {
+ /* s limited to [min,max] */
+ /* i limited to [-1, size] */
+ const GLfloat min = -1.0F / (2.0F * size);
+ const GLfloat max = 1.0F - min;
+ if (s <= min)
+ i = -1;
+ else if (s >= max)
+ i = size;
+ else
+ i = IFLOOR(s * size);
+ }
+ return i;
+ case GL_MIRRORED_REPEAT:
+ {
+ const GLfloat min = 1.0F / (2.0F * size);
+ const GLfloat max = 1.0F - min;
+ const GLint flr = IFLOOR(s);
+ GLfloat u;
+ if (flr & 1)
+ u = 1.0F - (s - (GLfloat) flr);
+ else
+ u = s - (GLfloat) flr;
+ if (u < min)
+ i = 0;
+ else if (u > max)
+ i = size - 1;
+ else
+ i = IFLOOR(u * size);
+ }
+ return i;
+ case GL_MIRROR_CLAMP_EXT:
+ {
+ /* s limited to [0,1] */
+ /* i limited to [0,size-1] */
+ const GLfloat u = FABSF(s);
+ if (u <= 0.0F)
+ i = 0;
+ else if (u >= 1.0F)
+ i = size - 1;
+ else
+ i = IFLOOR(u * size);
+ }
+ return i;
+ case GL_MIRROR_CLAMP_TO_EDGE_EXT:
+ {
+ /* s limited to [min,max] */
+ /* i limited to [0, size-1] */
+ const GLfloat min = 1.0F / (2.0F * size);
+ const GLfloat max = 1.0F - min;
+ const GLfloat u = FABSF(s);
+ if (u < min)
+ i = 0;
+ else if (u > max)
+ i = size - 1;
+ else
+ i = IFLOOR(u * size);
+ }
+ return i;
+ case GL_MIRROR_CLAMP_TO_BORDER_EXT:
+ {
+ /* s limited to [min,max] */
+ /* i limited to [0, size-1] */
+ const GLfloat min = -1.0F / (2.0F * size);
+ const GLfloat max = 1.0F - min;
+ const GLfloat u = FABSF(s);
+ if (u < min)
+ i = -1;
+ else if (u > max)
+ i = size;
+ else
+ i = IFLOOR(u * size);
+ }
+ return i;
+ case GL_CLAMP:
+ /* s limited to [0,1] */
+ /* i limited to [0,size-1] */
+ if (s <= 0.0F)
+ i = 0;
+ else if (s >= 1.0F)
+ i = size - 1;
+ else
+ i = IFLOOR(s * size);
+ return i;
+ default:
+ _mesa_problem(NULL, "Bad wrap mode");
+ return 0;
+ }
}
/* Power of two image sizes only */
-#define COMPUTE_LINEAR_REPEAT_TEXEL_LOCATION(S, U, SIZE, I0, I1) \
-{ \
- U = S * SIZE - 0.5F; \
- I0 = IFLOOR(U) & (SIZE - 1); \
- I1 = (I0 + 1) & (SIZE - 1); \
+static INLINE void
+linear_repeat_texel_location(GLuint size, GLfloat s,
+ GLint *i0, GLint *i1, GLfloat *weight)
+{
+ GLfloat u = s * size - 0.5F;
+ *i0 = IFLOOR(u) & (size - 1);
+ *i1 = (*i0 + 1) & (size - 1);
+ *weight = FRAC(u);
}
@@ -516,17 +540,6 @@ nearest_mipmap_level(const struct gl_texture_object *tObj, GLfloat lambda)
/*
- * Note, the FRAC macro has to work perfectly. Otherwise you'll sometimes
- * see 1-pixel bands of improperly weighted linear-filtered textures.
- * The tests/texwrap.c demo is a good test.
- * Also note, FRAC(x) doesn't truly return the fractional part of x for x < 0.
- * Instead, if x < 0 then FRAC(x) = 1 - true_frac(x).
- */
-#define FRAC(f) ((f) - IFLOOR(f))
-
-
-
-/*
* Bitflags for texture border color sampling.
*/
#define I0BIT 1
@@ -538,7 +551,7 @@ nearest_mipmap_level(const struct gl_texture_object *tObj, GLfloat lambda)
-/*
+/**
* The lambda[] array values are always monotonic. Either the whole span
* will be minified, magnified, or split between the two. This function
* determines the subranges in [0, n-1] that are to be minified or magnified.
@@ -651,10 +664,10 @@ compute_min_mag_ranges(const struct gl_texture_object *tObj,
/* 1-D Texture Sampling Functions */
/**********************************************************************/
-/*
+/**
* Return the texture sample for coordinate (s) using GL_NEAREST filter.
*/
-static void
+static INLINE void
sample_1d_nearest(GLcontext *ctx,
const struct gl_texture_object *tObj,
const struct gl_texture_image *img,
@@ -662,7 +675,7 @@ sample_1d_nearest(GLcontext *ctx,
{
const GLint width = img->Width2; /* without border, power of two */
GLint i;
- COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapS, texcoord[0], width, i);
+ i = nearest_texel_location(tObj->WrapS, img, width, texcoord[0]);
/* skip over the border, if any */
i += img->Border;
if (i < 0 || i >= (GLint) img->Width) {
@@ -675,10 +688,10 @@ sample_1d_nearest(GLcontext *ctx,
}
-/*
+/**
* Return the texture sample for coordinate (s) using GL_LINEAR filter.
*/
-static void
+static INLINE void
sample_1d_linear(GLcontext *ctx,
const struct gl_texture_object *tObj,
const struct gl_texture_image *img,
@@ -686,12 +699,11 @@ sample_1d_linear(GLcontext *ctx,
{
const GLint width = img->Width2;
GLint i0, i1;
- GLfloat u;
GLbitfield useBorderColor = 0x0;
GLfloat a;
GLchan t0[4], t1[4]; /* texels */
- COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapS, texcoord[0], u, width, i0, i1);
+ linear_texel_locations(tObj->WrapS, img, width, texcoord[0], &i0, &i1, &a);
if (img->Border) {
i0 += img->Border;
@@ -716,7 +728,6 @@ sample_1d_linear(GLcontext *ctx,
img->FetchTexelc(img, i1, 0, 0, t1);
}
- a = FRAC(u);
lerp_rgba(rgba, a, t0, t1);
}
@@ -776,7 +787,6 @@ sample_1d_nearest_mipmap_linear(GLcontext *ctx,
}
-
static void
sample_1d_linear_mipmap_linear(GLcontext *ctx,
const struct gl_texture_object *tObj,
@@ -802,7 +812,7 @@ sample_1d_linear_mipmap_linear(GLcontext *ctx,
}
-
+/** Sample 1D texture, nearest filtering for both min/magnification */
static void
sample_nearest_1d( GLcontext *ctx,
const struct gl_texture_object *tObj, GLuint n,
@@ -812,13 +822,13 @@ sample_nearest_1d( GLcontext *ctx,
GLuint i;
struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
(void) lambda;
- for (i=0;i<n;i++) {
+ for (i = 0; i < n; i++) {
sample_1d_nearest(ctx, tObj, image, texcoords[i], rgba[i]);
}
}
-
+/** Sample 1D texture, linear filtering for both min/magnification */
static void
sample_linear_1d( GLcontext *ctx,
const struct gl_texture_object *tObj, GLuint n,
@@ -828,17 +838,13 @@ sample_linear_1d( GLcontext *ctx,
GLuint i;
struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
(void) lambda;
- for (i=0;i<n;i++) {
+ for (i = 0; i < n; i++) {
sample_1d_linear(ctx, tObj, image, texcoords[i], rgba[i]);
}
}
-/*
- * Given an (s) texture coordinate and lambda (level of detail) value,
- * return a texture sample.
- *
- */
+/** Sample 1D texture, using lambda to choose between min/magnification */
static void
sample_lambda_1d( GLcontext *ctx,
const struct gl_texture_object *tObj, GLuint n,
@@ -915,7 +921,7 @@ sample_lambda_1d( GLcontext *ctx,
/**********************************************************************/
-/*
+/**
* Return the texture sample for coordinate (s,t) using GL_NEAREST filter.
*/
static INLINE void
@@ -930,8 +936,8 @@ sample_2d_nearest(GLcontext *ctx,
GLint i, j;
(void) ctx;
- COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapS, texcoord[0], width, i);
- COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapT, texcoord[1], height, j);
+ i = nearest_texel_location(tObj->WrapS, img, width, texcoord[0]);
+ j = nearest_texel_location(tObj->WrapT, img, height, texcoord[1]);
/* skip over the border, if any */
i += img->Border;
@@ -947,7 +953,6 @@ sample_2d_nearest(GLcontext *ctx,
}
-
/**
* Return the texture sample for coordinate (s,t) using GL_LINEAR filter.
* New sampling code contributed by Lynn Quam <[email protected]>.
@@ -963,12 +968,11 @@ sample_2d_linear(GLcontext *ctx,
const GLint height = img->Height2;
GLint i0, j0, i1, j1;
GLbitfield useBorderColor = 0x0;
- GLfloat u, v;
GLfloat a, b;
GLchan t00[4], t10[4], t01[4], t11[4]; /* sampled texel colors */
- COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapS, texcoord[0], u, width, i0, i1);
- COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapT, texcoord[1], v, height, j0, j1);
+ linear_texel_locations(tObj->WrapS, img, width, texcoord[0], &i0, &i1, &a);
+ linear_texel_locations(tObj->WrapT, img, height, texcoord[1], &j0, &j1, &b);
if (img->Border) {
i0 += img->Border;
@@ -1009,13 +1013,11 @@ sample_2d_linear(GLcontext *ctx,
img->FetchTexelc(img, i1, j1, 0, t11);
}
- a = FRAC(u);
- b = FRAC(v);
lerp_rgba_2d(rgba, a, b, t00, t10, t01, t11);
}
-/*
+/**
* As above, but we know WRAP_S == REPEAT and WRAP_T == REPEAT.
* We don't have to worry about the texture border.
*/
@@ -1029,8 +1031,7 @@ sample_2d_linear_repeat(GLcontext *ctx,
const GLint width = img->Width2;
const GLint height = img->Height2;
GLint i0, j0, i1, j1;
- GLfloat u, v;
- GLfloat a, b;
+ GLfloat wi, wj;
GLchan t00[4], t10[4], t01[4], t11[4]; /* sampled texel colors */
(void) ctx;
@@ -1041,21 +1042,18 @@ sample_2d_linear_repeat(GLcontext *ctx,
ASSERT(img->TexFormat->BaseFormat != GL_COLOR_INDEX);
ASSERT(img->_IsPowerOfTwo);
- COMPUTE_LINEAR_REPEAT_TEXEL_LOCATION(texcoord[0], u, width, i0, i1);
- COMPUTE_LINEAR_REPEAT_TEXEL_LOCATION(texcoord[1], v, height, j0, j1);
+ linear_repeat_texel_location(width, texcoord[0], &i0, &i1, &wi);
+ linear_repeat_texel_location(height, texcoord[1], &j0, &j1, &wj);
img->FetchTexelc(img, i0, j0, 0, t00);
img->FetchTexelc(img, i1, j0, 0, t10);
img->FetchTexelc(img, i0, j1, 0, t01);
img->FetchTexelc(img, i1, j1, 0, t11);
- a = FRAC(u);
- b = FRAC(v);
- lerp_rgba_2d(rgba, a, b, t00, t10, t01, t11);
+ lerp_rgba_2d(rgba, wi, wj, t00, t10, t01, t11);
}
-
static void
sample_2d_nearest_mipmap_nearest(GLcontext *ctx,
const struct gl_texture_object *tObj,
@@ -1070,7 +1068,6 @@ sample_2d_nearest_mipmap_nearest(GLcontext *ctx,
}
-
static void
sample_2d_linear_mipmap_nearest(GLcontext *ctx,
const struct gl_texture_object *tObj,
@@ -1086,7 +1083,6 @@ sample_2d_linear_mipmap_nearest(GLcontext *ctx,
}
-
static void
sample_2d_nearest_mipmap_linear(GLcontext *ctx,
const struct gl_texture_object *tObj,
@@ -1112,8 +1108,6 @@ sample_2d_nearest_mipmap_linear(GLcontext *ctx,
}
-
-/* Trilinear filtering */
static void
sample_2d_linear_mipmap_linear( GLcontext *ctx,
const struct gl_texture_object *tObj,
@@ -1140,10 +1134,10 @@ sample_2d_linear_mipmap_linear( GLcontext *ctx,
static void
-sample_2d_linear_mipmap_linear_repeat( GLcontext *ctx,
- const struct gl_texture_object *tObj,
- GLuint n, const GLfloat texcoord[][4],
- const GLfloat lambda[], GLchan rgba[][4] )
+sample_2d_linear_mipmap_linear_repeat(GLcontext *ctx,
+ const struct gl_texture_object *tObj,
+ GLuint n, const GLfloat texcoord[][4],
+ const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
ASSERT(lambda != NULL);
@@ -1158,35 +1152,38 @@ sample_2d_linear_mipmap_linear_repeat( GLcontext *ctx,
else {
GLchan t0[4], t1[4]; /* texels */
const GLfloat f = FRAC(lambda[i]);
- sample_2d_linear_repeat(ctx, tObj, tObj->Image[0][level ], texcoord[i], t0);
- sample_2d_linear_repeat(ctx, tObj, tObj->Image[0][level+1], texcoord[i], t1);
+ sample_2d_linear_repeat(ctx, tObj, tObj->Image[0][level ],
+ texcoord[i], t0);
+ sample_2d_linear_repeat(ctx, tObj, tObj->Image[0][level+1],
+ texcoord[i], t1);
lerp_rgba(rgba[i], f, t0, t1);
}
}
}
+/** Sample 2D texture, nearest filtering for both min/magnification */
static void
-sample_nearest_2d( GLcontext *ctx,
- const struct gl_texture_object *tObj, GLuint n,
- const GLfloat texcoords[][4],
- const GLfloat lambda[], GLchan rgba[][4] )
+sample_nearest_2d(GLcontext *ctx,
+ const struct gl_texture_object *tObj, GLuint n,
+ const GLfloat texcoords[][4],
+ const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
(void) lambda;
- for (i=0;i<n;i++) {
+ for (i = 0; i < n; i++) {
sample_2d_nearest(ctx, tObj, image, texcoords[i], rgba[i]);
}
}
-
+/** Sample 2D texture, linear filtering for both min/magnification */
static void
-sample_linear_2d( GLcontext *ctx,
- const struct gl_texture_object *tObj, GLuint n,
- const GLfloat texcoords[][4],
- const GLfloat lambda[], GLchan rgba[][4] )
+sample_linear_2d(GLcontext *ctx,
+ const struct gl_texture_object *tObj, GLuint n,
+ const GLfloat texcoords[][4],
+ const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
@@ -1195,19 +1192,19 @@ sample_linear_2d( GLcontext *ctx,
tObj->WrapT == GL_REPEAT &&
image->_IsPowerOfTwo &&
image->Border == 0) {
- for (i=0;i<n;i++) {
+ for (i = 0; i < n; i++) {
sample_2d_linear_repeat(ctx, tObj, image, texcoords[i], rgba[i]);
}
}
else {
- for (i=0;i<n;i++) {
+ for (i = 0; i < n; i++) {
sample_2d_linear(ctx, tObj, image, texcoords[i], rgba[i]);
}
}
}
-/*
+/**
* Optimized 2-D texture sampling:
* S and T wrap mode == GL_REPEAT
* GL_NEAREST min/mag filter
@@ -1216,10 +1213,10 @@ sample_linear_2d( GLcontext *ctx,
* Format = GL_RGB
*/
static void
-opt_sample_rgb_2d( GLcontext *ctx,
- const struct gl_texture_object *tObj,
- GLuint n, const GLfloat texcoords[][4],
- const GLfloat lambda[], GLchan rgba[][4] )
+opt_sample_rgb_2d(GLcontext *ctx,
+ const struct gl_texture_object *tObj,
+ GLuint n, const GLfloat texcoords[][4],
+ const GLfloat lambda[], GLchan rgba[][4])
{
const struct gl_texture_image *img = tObj->Image[0][tObj->BaseLevel];
const GLfloat width = (GLfloat) img->Width;
@@ -1248,7 +1245,7 @@ opt_sample_rgb_2d( GLcontext *ctx,
}
-/*
+/**
* Optimized 2-D texture sampling:
* S and T wrap mode == GL_REPEAT
* GL_NEAREST min/mag filter
@@ -1257,10 +1254,10 @@ opt_sample_rgb_2d( GLcontext *ctx,
* Format = GL_RGBA
*/
static void
-opt_sample_rgba_2d( GLcontext *ctx,
- const struct gl_texture_object *tObj,
- GLuint n, const GLfloat texcoords[][4],
- const GLfloat lambda[], GLchan rgba[][4] )
+opt_sample_rgba_2d(GLcontext *ctx,
+ const struct gl_texture_object *tObj,
+ GLuint n, const GLfloat texcoords[][4],
+ const GLfloat lambda[], GLchan rgba[][4])
{
const struct gl_texture_image *img = tObj->Image[0][tObj->BaseLevel];
const GLfloat width = (GLfloat) img->Width;
@@ -1287,15 +1284,12 @@ opt_sample_rgba_2d( GLcontext *ctx,
}
-/*
- * Given an array of texture coordinate and lambda (level of detail)
- * values, return an array of texture sample.
- */
+/** Sample 2D texture, using lambda to choose between min/magnification */
static void
-sample_lambda_2d( GLcontext *ctx,
- const struct gl_texture_object *tObj,
- GLuint n, const GLfloat texcoords[][4],
- const GLfloat lambda[], GLchan rgba[][4] )
+sample_lambda_2d(GLcontext *ctx,
+ const struct gl_texture_object *tObj,
+ GLuint n, const GLfloat texcoords[][4],
+ const GLfloat lambda[], GLchan rgba[][4])
{
const struct gl_texture_image *tImg = tObj->Image[0][tObj->BaseLevel];
GLuint minStart, minEnd; /* texels with minification */
@@ -1409,10 +1403,10 @@ sample_lambda_2d( GLcontext *ctx,
/* 3-D Texture Sampling Functions */
/**********************************************************************/
-/*
+/**
* Return the texture sample for coordinate (s,t,r) using GL_NEAREST filter.
*/
-static void
+static INLINE void
sample_3d_nearest(GLcontext *ctx,
const struct gl_texture_object *tObj,
const struct gl_texture_image *img,
@@ -1425,9 +1419,9 @@ sample_3d_nearest(GLcontext *ctx,
GLint i, j, k;
(void) ctx;
- COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapS, texcoord[0], width, i);
- COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapT, texcoord[1], height, j);
- COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapR, texcoord[2], depth, k);
+ i = nearest_texel_location(tObj->WrapS, img, width, texcoord[0]);
+ j = nearest_texel_location(tObj->WrapT, img, height, texcoord[1]);
+ k = nearest_texel_location(tObj->WrapR, img, depth, texcoord[2]);
if (i < 0 || i >= (GLint) img->Width ||
j < 0 || j >= (GLint) img->Height ||
@@ -1441,8 +1435,7 @@ sample_3d_nearest(GLcontext *ctx,
}
-
-/*
+/**
* Return the texture sample for coordinate (s,t,r) using GL_LINEAR filter.
*/
static void
@@ -1457,14 +1450,13 @@ sample_3d_linear(GLcontext *ctx,
const GLint depth = img->Depth2;
GLint i0, j0, k0, i1, j1, k1;
GLbitfield useBorderColor = 0x0;
- GLfloat u, v, w;
GLfloat a, b, c;
GLchan t000[4], t010[4], t001[4], t011[4];
GLchan t100[4], t110[4], t101[4], t111[4];
- COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapS, texcoord[0], u, width, i0, i1);
- COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapT, texcoord[1], v, height, j0, j1);
- COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapR, texcoord[2], w, depth, k0, k1);
+ linear_texel_locations(tObj->WrapS, img, width, texcoord[0], &i0, &i1, &a);
+ linear_texel_locations(tObj->WrapT, img, height, texcoord[1], &j0, &j1, &b);
+ linear_texel_locations(tObj->WrapR, img, depth, texcoord[2], &k0, &k1, &c);
if (img->Border) {
i0 += img->Border;
@@ -1536,14 +1528,10 @@ sample_3d_linear(GLcontext *ctx,
}
/* trilinear interpolation of samples */
- a = FRAC(u);
- b = FRAC(v);
- c = FRAC(w);
lerp_rgba_3d(rgba, a, b, c, t000, t100, t010, t110, t001, t101, t011, t111);
}
-
static void
sample_3d_nearest_mipmap_nearest(GLcontext *ctx,
const struct gl_texture_object *tObj,
@@ -1623,6 +1611,7 @@ sample_3d_linear_mipmap_linear(GLcontext *ctx,
}
+/** Sample 3D texture, nearest filtering for both min/magnification */
static void
sample_nearest_3d(GLcontext *ctx,
const struct gl_texture_object *tObj, GLuint n,
@@ -1632,37 +1621,34 @@ sample_nearest_3d(GLcontext *ctx,
GLuint i;
struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
(void) lambda;
- for (i=0;i<n;i++) {
+ for (i = 0; i < n; i++) {
sample_3d_nearest(ctx, tObj, image, texcoords[i], rgba[i]);
}
}
-
+/** Sample 3D texture, linear filtering for both min/magnification */
static void
-sample_linear_3d( GLcontext *ctx,
- const struct gl_texture_object *tObj, GLuint n,
- const GLfloat texcoords[][4],
- const GLfloat lambda[], GLchan rgba[][4] )
+sample_linear_3d(GLcontext *ctx,
+ const struct gl_texture_object *tObj, GLuint n,
+ const GLfloat texcoords[][4],
+ const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
(void) lambda;
- for (i=0;i<n;i++) {
+ for (i = 0; i < n; i++) {
sample_3d_linear(ctx, tObj, image, texcoords[i], rgba[i]);
}
}
-/*
- * Given an (s,t,r) texture coordinate and lambda (level of detail) value,
- * return a texture sample.
- */
+/** Sample 3D texture, using lambda to choose between min/magnification */
static void
-sample_lambda_3d( GLcontext *ctx,
- const struct gl_texture_object *tObj, GLuint n,
- const GLfloat texcoords[][4], const GLfloat lambda[],
- GLchan rgba[][4] )
+sample_lambda_3d(GLcontext *ctx,
+ const struct gl_texture_object *tObj, GLuint n,
+ const GLfloat texcoords[][4], const GLfloat lambda[],
+ GLchan rgba[][4])
{
GLuint minStart, minEnd; /* texels with minification */
GLuint magStart, magEnd; /* texels with magnification */
@@ -1951,11 +1937,12 @@ sample_cube_linear_mipmap_linear(GLcontext *ctx,
}
+/** Sample cube texture, using lambda to choose between min/magnification */
static void
-sample_lambda_cube( GLcontext *ctx,
- const struct gl_texture_object *tObj, GLuint n,
- const GLfloat texcoords[][4], const GLfloat lambda[],
- GLchan rgba[][4])
+sample_lambda_cube(GLcontext *ctx,
+ const struct gl_texture_object *tObj, GLuint n,
+ const GLfloat texcoords[][4], const GLfloat lambda[],
+ GLchan rgba[][4])
{
GLuint minStart, minEnd; /* texels with minification */
GLuint magStart, magEnd; /* texels with magnification */
@@ -2031,50 +2018,57 @@ sample_lambda_cube( GLcontext *ctx,
static INLINE GLint
clamp_rect_coord_nearest(GLenum wrapMode, GLfloat coord, GLint max)
{
- if (wrapMode == GL_CLAMP) {
+ switch (wrapMode) {
+ case GL_CLAMP:
return IFLOOR( CLAMP(coord, 0.0F, max - 1) );
- }
- else if (wrapMode == GL_CLAMP_TO_EDGE) {
+ case GL_CLAMP_TO_EDGE:
return IFLOOR( CLAMP(coord, 0.5F, max - 0.5F) );
- }
- else {
+ case GL_CLAMP_TO_BORDER:
return IFLOOR( CLAMP(coord, -0.5F, max + 0.5F) );
+ default:
+ _mesa_problem(NULL, "bad wrapMode in clamp_rect_coord_nearest");
+ return 0;
}
}
-/*
+/**
* As above, but GL_LINEAR filtering.
*/
static INLINE void
clamp_rect_coord_linear(GLenum wrapMode, GLfloat coord, GLint max,
- GLint *i0out, GLint *i1out)
+ GLint *i0out, GLint *i1out, GLfloat *weight)
{
GLfloat fcol;
GLint i0, i1;
- if (wrapMode == GL_CLAMP) {
+ switch (wrapMode) {
+ case GL_CLAMP:
/* Not exactly what the spec says, but it matches NVIDIA output */
fcol = CLAMP(coord - 0.5F, 0.0, max-1);
i0 = IFLOOR(fcol);
i1 = i0 + 1;
- }
- else if (wrapMode == GL_CLAMP_TO_EDGE) {
+ break;
+ case GL_CLAMP_TO_EDGE:
fcol = CLAMP(coord, 0.5F, max - 0.5F);
fcol -= 0.5F;
i0 = IFLOOR(fcol);
i1 = i0 + 1;
if (i1 > max - 1)
i1 = max - 1;
- }
- else {
- ASSERT(wrapMode == GL_CLAMP_TO_BORDER);
+ break;
+ case GL_CLAMP_TO_BORDER:
fcol = CLAMP(coord, -0.5F, max + 0.5F);
fcol -= 0.5F;
i0 = IFLOOR(fcol);
i1 = i0 + 1;
+ default:
+ _mesa_problem(NULL, "bad wrapMode in clamp_rect_coord_linear");
+ i0 = i1 = 0;
+ fcol = 0.0F;
}
*i0out = i0;
*i1out = i1;
+ *weight = FRAC(fcol);
}
@@ -2085,10 +2079,8 @@ sample_nearest_rect(GLcontext *ctx,
GLchan rgba[][4])
{
const struct gl_texture_image *img = tObj->Image[0][0];
- const GLfloat width = (GLfloat) img->Width;
- const GLfloat height = (GLfloat) img->Height;
- const GLint width_minus_1 = img->Width - 1;
- const GLint height_minus_1 = img->Height - 1;
+ const GLint width = img->Width;
+ const GLint height = img->Height;
GLuint i;
(void) ctx;
@@ -2106,7 +2098,7 @@ sample_nearest_rect(GLcontext *ctx,
GLint row, col;
col = clamp_rect_coord_nearest(tObj->WrapS, texcoords[i][0], width);
row = clamp_rect_coord_nearest(tObj->WrapT, texcoords[i][1], height);
- if (col < 0 || col > width_minus_1 || row < 0 || row > height_minus_1)
+ if (col < 0 || col >= width || row < 0 || row >= height)
COPY_CHAN4(rgba[i], tObj->_BorderChan);
else
img->FetchTexelc(img, col, row, 0, rgba[i]);
@@ -2121,10 +2113,8 @@ sample_linear_rect(GLcontext *ctx,
const GLfloat lambda[], GLchan rgba[][4])
{
const struct gl_texture_image *img = tObj->Image[0][0];
- const GLfloat width = (GLfloat) img->Width;
- const GLfloat height = (GLfloat) img->Height;
- const GLint width_minus_1 = img->Width - 1;
- const GLint height_minus_1 = img->Height - 1;
+ const GLint width = img->Width;
+ const GLint height = img->Height;
GLuint i;
(void) ctx;
@@ -2138,64 +2128,22 @@ sample_linear_rect(GLcontext *ctx,
tObj->WrapT == GL_CLAMP_TO_BORDER);
ASSERT(img->TexFormat->BaseFormat != GL_COLOR_INDEX);
- /* XXX lots of opportunity for optimization in this loop */
for (i = 0; i < n; i++) {
- GLfloat frow, fcol;
GLint i0, j0, i1, j1;
GLchan t00[4], t01[4], t10[4], t11[4];
GLfloat a, b;
GLbitfield useBorderColor = 0x0;
- /* NOTE: we DO NOT use [0, 1] texture coordinates! */
- if (tObj->WrapS == GL_CLAMP) {
- /* Not exactly what the spec says, but it matches NVIDIA output */
- fcol = CLAMP(texcoords[i][0] - 0.5F, 0.0, width_minus_1);
- i0 = IFLOOR(fcol);
- i1 = i0 + 1;
- }
- else if (tObj->WrapS == GL_CLAMP_TO_EDGE) {
- fcol = CLAMP(texcoords[i][0], 0.5F, width - 0.5F);
- fcol -= 0.5F;
- i0 = IFLOOR(fcol);
- i1 = i0 + 1;
- if (i1 > width_minus_1)
- i1 = width_minus_1;
- }
- else {
- ASSERT(tObj->WrapS == GL_CLAMP_TO_BORDER);
- fcol = CLAMP(texcoords[i][0], -0.5F, width + 0.5F);
- fcol -= 0.5F;
- i0 = IFLOOR(fcol);
- i1 = i0 + 1;
- }
-
- if (tObj->WrapT == GL_CLAMP) {
- /* Not exactly what the spec says, but it matches NVIDIA output */
- frow = CLAMP(texcoords[i][1] - 0.5F, 0.0, width_minus_1);
- j0 = IFLOOR(frow);
- j1 = j0 + 1;
- }
- else if (tObj->WrapT == GL_CLAMP_TO_EDGE) {
- frow = CLAMP(texcoords[i][1], 0.5F, height - 0.5F);
- frow -= 0.5F;
- j0 = IFLOOR(frow);
- j1 = j0 + 1;
- if (j1 > height_minus_1)
- j1 = height_minus_1;
- }
- else {
- ASSERT(tObj->WrapT == GL_CLAMP_TO_BORDER);
- frow = CLAMP(texcoords[i][1], -0.5F, height + 0.5F);
- frow -= 0.5F;
- j0 = IFLOOR(frow);
- j1 = j0 + 1;
- }
+ clamp_rect_coord_linear(tObj->WrapS, texcoords[i][0], width,
+ &i0, &i1, &a);
+ clamp_rect_coord_linear(tObj->WrapT, texcoords[i][1], height,
+ &j0, &j1, &b);
/* compute integer rows/columns */
- if (i0 < 0 || i0 > width_minus_1) useBorderColor |= I0BIT;
- if (i1 < 0 || i1 > width_minus_1) useBorderColor |= I1BIT;
- if (j0 < 0 || j0 > height_minus_1) useBorderColor |= J0BIT;
- if (j1 < 0 || j1 > height_minus_1) useBorderColor |= J1BIT;
+ if (i0 < 0 || i0 >= width) useBorderColor |= I0BIT;
+ if (i1 < 0 || i1 >= width) useBorderColor |= I1BIT;
+ if (j0 < 0 || j0 >= height) useBorderColor |= J0BIT;
+ if (j1 < 0 || j1 >= height) useBorderColor |= J1BIT;
/* get four texel samples */
if (useBorderColor & (I0BIT | J0BIT))
@@ -2218,20 +2166,17 @@ sample_linear_rect(GLcontext *ctx,
else
img->FetchTexelc(img, i1, j1, 0, t11);
- /* compute interpolants */
- a = FRAC(fcol);
- b = FRAC(frow);
-
lerp_rgba_2d(rgba[i], a, b, t00, t10, t01, t11);
}
}
+/** Sample Rect texture, using lambda to choose between min/magnification */
static void
-sample_lambda_rect( GLcontext *ctx,
- const struct gl_texture_object *tObj, GLuint n,
- const GLfloat texcoords[][4], const GLfloat lambda[],
- GLchan rgba[][4])
+sample_lambda_rect(GLcontext *ctx,
+ const struct gl_texture_object *tObj, GLuint n,
+ const GLfloat texcoords[][4], const GLfloat lambda[],
+ GLchan rgba[][4])
{
GLuint minStart, minEnd, magStart, magEnd;
@@ -2243,22 +2188,22 @@ sample_lambda_rect( GLcontext *ctx,
if (minStart < minEnd) {
if (tObj->MinFilter == GL_NEAREST) {
- sample_nearest_rect( ctx, tObj, minEnd - minStart,
- texcoords + minStart, NULL, rgba + minStart);
+ sample_nearest_rect(ctx, tObj, minEnd - minStart,
+ texcoords + minStart, NULL, rgba + minStart);
}
else {
- sample_linear_rect( ctx, tObj, minEnd - minStart,
- texcoords + minStart, NULL, rgba + minStart);
+ sample_linear_rect(ctx, tObj, minEnd - minStart,
+ texcoords + minStart, NULL, rgba + minStart);
}
}
if (magStart < magEnd) {
if (tObj->MagFilter == GL_NEAREST) {
- sample_nearest_rect( ctx, tObj, magEnd - magStart,
- texcoords + magStart, NULL, rgba + magStart);
+ sample_nearest_rect(ctx, tObj, magEnd - magStart,
+ texcoords + magStart, NULL, rgba + magStart);
}
else {
- sample_linear_rect( ctx, tObj, magEnd - magStart,
- texcoords + magStart, NULL, rgba + magStart);
+ sample_linear_rect(ctx, tObj, magEnd - magStart,
+ texcoords + magStart, NULL, rgba + magStart);
}
}
}
@@ -2269,7 +2214,7 @@ sample_lambda_rect( GLcontext *ctx,
/* 2D Texture Array Sampling Functions */
/**********************************************************************/
-/*
+/**
* Return the texture sample for coordinate (s,t,r) using GL_NEAREST filter.
*/
static void
@@ -2286,8 +2231,8 @@ sample_2d_array_nearest(GLcontext *ctx,
GLint array;
(void) ctx;
- COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapS, texcoord[0], width, i);
- COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapT, texcoord[1], height, j);
+ i = nearest_texel_location(tObj->WrapS, img, width, texcoord[0]);
+ j = nearest_texel_location(tObj->WrapT, img, height, texcoord[1]);
array = clamp_rect_coord_nearest(tObj->WrapR, texcoord[2], depth);
if (i < 0 || i >= (GLint) img->Width ||
@@ -2302,8 +2247,7 @@ sample_2d_array_nearest(GLcontext *ctx,
}
-
-/*
+/**
* Return the texture sample for coordinate (s,t,r) using GL_LINEAR filter.
*/
static void
@@ -2319,12 +2263,11 @@ sample_2d_array_linear(GLcontext *ctx,
GLint i0, j0, i1, j1;
GLint array;
GLbitfield useBorderColor = 0x0;
- GLfloat u, v;
GLfloat a, b;
GLchan t00[4], t01[4], t10[4], t11[4];
- COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapS, texcoord[0], u, width, i0, i1);
- COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapT, texcoord[1], v, height, j0, j1);
+ linear_texel_locations(tObj->WrapS, img, width, texcoord[0], &i0, &i1, &a);
+ linear_texel_locations(tObj->WrapT, img, height, texcoord[1], &j0, &j1, &b);
array = clamp_rect_coord_nearest(tObj->WrapR, texcoord[2], depth);
if (array < 0 || array >= depth) {
@@ -2372,19 +2315,16 @@ sample_2d_array_linear(GLcontext *ctx,
}
/* trilinear interpolation of samples */
- a = FRAC(u);
- b = FRAC(v);
lerp_rgba_2d(rgba, a, b, t00, t10, t01, t11);
}
}
-
static void
sample_2d_array_nearest_mipmap_nearest(GLcontext *ctx,
const struct gl_texture_object *tObj,
GLuint n, const GLfloat texcoord[][4],
- const GLfloat lambda[], GLchan rgba[][4] )
+ const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
for (i = 0; i < n; i++) {
@@ -2428,8 +2368,10 @@ sample_2d_array_nearest_mipmap_linear(GLcontext *ctx,
else {
GLchan t0[4], t1[4]; /* texels */
const GLfloat f = FRAC(lambda[i]);
- sample_2d_array_nearest(ctx, tObj, tObj->Image[0][level ], texcoord[i], t0);
- sample_2d_array_nearest(ctx, tObj, tObj->Image[0][level+1], texcoord[i], t1);
+ sample_2d_array_nearest(ctx, tObj, tObj->Image[0][level ],
+ texcoord[i], t0);
+ sample_2d_array_nearest(ctx, tObj, tObj->Image[0][level+1],
+ texcoord[i], t1);
lerp_rgba(rgba[i], f, t0, t1);
}
}
@@ -2438,9 +2380,9 @@ sample_2d_array_nearest_mipmap_linear(GLcontext *ctx,
static void
sample_2d_array_linear_mipmap_linear(GLcontext *ctx,
- const struct gl_texture_object *tObj,
- GLuint n, const GLfloat texcoord[][4],
- const GLfloat lambda[], GLchan rgba[][4])
+ const struct gl_texture_object *tObj,
+ GLuint n, const GLfloat texcoord[][4],
+ const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
ASSERT(lambda != NULL);
@@ -2453,30 +2395,34 @@ sample_2d_array_linear_mipmap_linear(GLcontext *ctx,
else {
GLchan t0[4], t1[4]; /* texels */
const GLfloat f = FRAC(lambda[i]);
- sample_2d_array_linear(ctx, tObj, tObj->Image[0][level ], texcoord[i], t0);
- sample_2d_array_linear(ctx, tObj, tObj->Image[0][level+1], texcoord[i], t1);
+ sample_2d_array_linear(ctx, tObj, tObj->Image[0][level ],
+ texcoord[i], t0);
+ sample_2d_array_linear(ctx, tObj, tObj->Image[0][level+1],
+ texcoord[i], t1);
lerp_rgba(rgba[i], f, t0, t1);
}
}
}
+/** Sample 2D Array texture, nearest filtering for both min/magnification */
static void
sample_nearest_2d_array(GLcontext *ctx,
- const struct gl_texture_object *tObj, GLuint n,
- const GLfloat texcoords[][4], const GLfloat lambda[],
- GLchan rgba[][4])
+ const struct gl_texture_object *tObj, GLuint n,
+ const GLfloat texcoords[][4], const GLfloat lambda[],
+ GLchan rgba[][4])
{
GLuint i;
struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
(void) lambda;
- for (i=0;i<n;i++) {
+ for (i = 0; i < n; i++) {
sample_2d_array_nearest(ctx, tObj, image, texcoords[i], rgba[i]);
}
}
+/** Sample 2D Array texture, linear filtering for both min/magnification */
static void
sample_linear_2d_array(GLcontext *ctx,
const struct gl_texture_object *tObj, GLuint n,
@@ -2486,16 +2432,13 @@ sample_linear_2d_array(GLcontext *ctx,
GLuint i;
struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
(void) lambda;
- for (i=0;i<n;i++) {
+ for (i = 0; i < n; i++) {
sample_2d_array_linear(ctx, tObj, image, texcoords[i], rgba[i]);
}
}
-/*
- * Given an (s,t,r) texture coordinate and lambda (level of detail) value,
- * return a texture sample.
- */
+/** Sample 2D Array texture, using lambda to choose between min/magnification */
static void
sample_lambda_2d_array(GLcontext *ctx,
const struct gl_texture_object *tObj, GLuint n,
@@ -2525,8 +2468,10 @@ sample_lambda_2d_array(GLcontext *ctx,
texcoords[i], rgba[i]);
break;
case GL_NEAREST_MIPMAP_NEAREST:
- sample_2d_array_nearest_mipmap_nearest(ctx, tObj, m, texcoords + minStart,
- lambda + minStart, rgba + minStart);
+ sample_2d_array_nearest_mipmap_nearest(ctx, tObj, m,
+ texcoords + minStart,
+ lambda + minStart,
+ rgba + minStart);
break;
case GL_LINEAR_MIPMAP_NEAREST:
sample_2d_array_linear_mipmap_nearest(ctx, tObj, m,
@@ -2535,8 +2480,10 @@ sample_lambda_2d_array(GLcontext *ctx,
rgba + minStart);
break;
case GL_NEAREST_MIPMAP_LINEAR:
- sample_2d_array_nearest_mipmap_linear(ctx, tObj, m, texcoords + minStart,
- lambda + minStart, rgba + minStart);
+ sample_2d_array_nearest_mipmap_linear(ctx, tObj, m,
+ texcoords + minStart,
+ lambda + minStart,
+ rgba + minStart);
break;
case GL_LINEAR_MIPMAP_LINEAR:
sample_2d_array_linear_mipmap_linear(ctx, tObj, m,
@@ -2577,7 +2524,7 @@ sample_lambda_2d_array(GLcontext *ctx,
/* 1D Texture Array Sampling Functions */
/**********************************************************************/
-/*
+/**
* Return the texture sample for coordinate (s,t,r) using GL_NEAREST filter.
*/
static void
@@ -2593,7 +2540,7 @@ sample_1d_array_nearest(GLcontext *ctx,
GLint array;
(void) ctx;
- COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapS, texcoord[0], width, i);
+ i = nearest_texel_location(tObj->WrapS, img, width, texcoord[0]);
array = clamp_rect_coord_nearest(tObj->WrapT, texcoord[1], height);
if (i < 0 || i >= (GLint) img->Width ||
@@ -2607,8 +2554,7 @@ sample_1d_array_nearest(GLcontext *ctx,
}
-
-/*
+/**
* Return the texture sample for coordinate (s,t,r) using GL_LINEAR filter.
*/
static void
@@ -2623,11 +2569,10 @@ sample_1d_array_linear(GLcontext *ctx,
GLint i0, i1;
GLint array;
GLbitfield useBorderColor = 0x0;
- GLfloat u;
GLfloat a;
GLchan t0[4], t1[4];
- COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapS, texcoord[0], u, width, i0, i1);
+ linear_texel_locations(tObj->WrapS, img, width, texcoord[0], &i0, &i1, &a);
array = clamp_rect_coord_nearest(tObj->WrapT, texcoord[1], height);
if (img->Border) {
@@ -2657,17 +2602,15 @@ sample_1d_array_linear(GLcontext *ctx,
}
/* bilinear interpolation of samples */
- a = FRAC(u);
lerp_rgba(rgba, a, t0, t1);
}
-
static void
sample_1d_array_nearest_mipmap_nearest(GLcontext *ctx,
const struct gl_texture_object *tObj,
GLuint n, const GLfloat texcoord[][4],
- const GLfloat lambda[], GLchan rgba[][4] )
+ const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
for (i = 0; i < n; i++) {
@@ -2721,9 +2664,9 @@ sample_1d_array_nearest_mipmap_linear(GLcontext *ctx,
static void
sample_1d_array_linear_mipmap_linear(GLcontext *ctx,
- const struct gl_texture_object *tObj,
- GLuint n, const GLfloat texcoord[][4],
- const GLfloat lambda[], GLchan rgba[][4])
+ const struct gl_texture_object *tObj,
+ GLuint n, const GLfloat texcoord[][4],
+ const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
ASSERT(lambda != NULL);
@@ -2744,22 +2687,23 @@ sample_1d_array_linear_mipmap_linear(GLcontext *ctx,
}
+/** Sample 1D Array texture, nearest filtering for both min/magnification */
static void
sample_nearest_1d_array(GLcontext *ctx,
- const struct gl_texture_object *tObj, GLuint n,
- const GLfloat texcoords[][4], const GLfloat lambda[],
- GLchan rgba[][4])
+ const struct gl_texture_object *tObj, GLuint n,
+ const GLfloat texcoords[][4], const GLfloat lambda[],
+ GLchan rgba[][4])
{
GLuint i;
struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
(void) lambda;
- for (i=0;i<n;i++) {
+ for (i = 0; i < n; i++) {
sample_1d_array_nearest(ctx, tObj, image, texcoords[i], rgba[i]);
}
}
-
+/** Sample 1D Array texture, linear filtering for both min/magnification */
static void
sample_linear_1d_array(GLcontext *ctx,
const struct gl_texture_object *tObj, GLuint n,
@@ -2769,16 +2713,13 @@ sample_linear_1d_array(GLcontext *ctx,
GLuint i;
struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
(void) lambda;
- for (i=0;i<n;i++) {
+ for (i = 0; i < n; i++) {
sample_1d_array_linear(ctx, tObj, image, texcoords[i], rgba[i]);
}
}
-/*
- * Given an (s,t,r) texture coordinate and lambda (level of detail) value,
- * return a texture sample.
- */
+/** Sample 1D Array texture, using lambda to choose between min/magnification */
static void
sample_lambda_1d_array(GLcontext *ctx,
const struct gl_texture_object *tObj, GLuint n,
@@ -2854,9 +2795,7 @@ sample_lambda_1d_array(GLcontext *ctx,
}
-
-
-/*
+/**
* Sample a shadow/depth texture.
*/
static void
@@ -2887,7 +2826,7 @@ sample_depth_texture( GLcontext *ctx,
tObj->Target == GL_TEXTURE_1D_ARRAY_EXT ||
tObj->Target == GL_TEXTURE_2D_ARRAY_EXT);
- UNCLAMPED_FLOAT_TO_CHAN(ambient, tObj->ShadowAmbient);
+ UNCLAMPED_FLOAT_TO_CHAN(ambient, tObj->CompareFailValue);
/* XXXX if tObj->MinFilter != tObj->MagFilter, we're ignoring lambda */
@@ -2906,33 +2845,36 @@ sample_depth_texture( GLcontext *ctx,
break;
case GL_TEXTURE_1D:
- COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapS, texcoords[i][0],
- width, col);
+ col = nearest_texel_location(tObj->WrapS, img, width,
+ texcoords[i][0]);
row = 0;
slice = 0;
break;
case GL_TEXTURE_2D:
- COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapS, texcoords[i][0],
- width, col);
- COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapT, texcoords[i][1],
- height, row);
+ col = nearest_texel_location(tObj->WrapS, img, width,
+ texcoords[i][0]);
+ row = nearest_texel_location(tObj->WrapT, img, height,
+ texcoords[i][1]);
slice = 0;
break;
case GL_TEXTURE_1D_ARRAY_EXT:
- COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapS, texcoords[i][0],
- width, col);
+ col = nearest_texel_location(tObj->WrapS, img, width,
+ texcoords[i][0]);
row = clamp_rect_coord_nearest(tObj->WrapT, texcoords[i][1], height);
slice = 0;
+ break;
case GL_TEXTURE_2D_ARRAY_EXT:
- COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapS, texcoords[i][0],
- width, col);
- COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapT, texcoords[i][1],
- height, row);
+ col = nearest_texel_location(tObj->WrapS, img, width,
+ texcoords[i][0]);
+ row = nearest_texel_location(tObj->WrapT, img, height,
+ texcoords[i][1]);
slice = clamp_rect_coord_nearest(tObj->WrapR, texcoords[i][2], depth);
break;
+ default:
+ col = row = slice = 0;
}
if (col >= 0 && row >= 0 && col < width && row < height &&
@@ -3007,41 +2949,44 @@ sample_depth_texture( GLcontext *ctx,
GLfloat depth00, depth01, depth10, depth11;
GLint i0, i1, j0, j1;
GLint slice;
- GLfloat u, v;
+ GLfloat a, b;
GLuint useBorderTexel;
switch (tObj->Target) {
case GL_TEXTURE_RECTANGLE_ARB:
clamp_rect_coord_linear(tObj->WrapS, texcoords[i][0],
- width, &i0, &i1);
+ width, &i0, &i1, &a);
clamp_rect_coord_linear(tObj->WrapT, texcoords[i][1],
- height, &j0, &j1);
+ height, &j0, &j1, &b);
slice = 0;
break;
case GL_TEXTURE_1D:
case GL_TEXTURE_2D:
- COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapS, texcoords[i][0],
- u, width, i0, i1);
- COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapT, texcoords[i][1],
- v, height,j0, j1);
+ linear_texel_locations(tObj->WrapS, img, width,
+ texcoords[i][0], &i0, &i1, &a);
+ linear_texel_locations(tObj->WrapT, img, height,
+ texcoords[i][1], &j0, &j1, &b);
slice = 0;
break;
case GL_TEXTURE_1D_ARRAY_EXT:
- COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapS, texcoords[i][0],
- u, width, i0, i1);
+ linear_texel_locations(tObj->WrapS, img, width,
+ texcoords[i][0], &i0, &i1, &a);
j0 = clamp_rect_coord_nearest(tObj->WrapT, texcoords[i][1], height);
j1 = j0;
slice = 0;
+ break;
case GL_TEXTURE_2D_ARRAY_EXT:
- COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapS, texcoords[i][0],
- u, width, i0, i1);
- COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapT, texcoords[i][1],
- v, height,j0, j1);
+ linear_texel_locations(tObj->WrapS, img, width,
+ texcoords[i][0], &i0, &i1, &a);
+ linear_texel_locations(tObj->WrapT, img, height,
+ texcoords[i][1], &j0, &j1, &b);
slice = clamp_rect_coord_nearest(tObj->WrapR, texcoords[i][2], depth);
break;
+ default:
+ slice = 0;
}
useBorderTexel = 0;
@@ -3103,8 +3048,6 @@ sample_depth_texture( GLcontext *ctx,
if (0) {
/* compute a single weighted depth sample and do one comparison */
- const GLfloat a = FRAC(u + 1.0F);
- const GLfloat b = FRAC(v + 1.0F);
const GLfloat depthSample
= lerp_2d(a, b, depth00, depth10, depth01, depth11);
if ((depthSample <= texcoords[i][compare_coord] && function == GL_LEQUAL) ||
@@ -3175,8 +3118,6 @@ sample_depth_texture( GLcontext *ctx,
case GL_NONE:
/* ordinary bilinear filtering */
{
- const GLfloat a = FRAC(u + 1.0F);
- const GLfloat b = FRAC(v + 1.0F);
const GLfloat depthSample
= lerp_2d(a, b, depth00, depth10, depth01, depth11);
CLAMPED_FLOAT_TO_CHAN(result, depthSample);
@@ -3215,103 +3156,6 @@ sample_depth_texture( GLcontext *ctx,
}
-#if 0
-/*
- * Experimental depth texture sampling function.
- */
-static void
-sample_depth_texture2(const GLcontext *ctx,
- const struct gl_texture_unit *texUnit,
- GLuint n, const GLfloat texcoords[][4],
- GLchan texel[][4])
-{
- const struct gl_texture_object *texObj = texUnit->_Current;
- const GLint baseLevel = texObj->BaseLevel;
- const struct gl_texture_image *texImage = texObj->Image[0][baseLevel];
- const GLuint width = texImage->Width;
- const GLuint height = texImage->Height;
- GLchan ambient;
- GLboolean lequal, gequal;
-
- if (texObj->Target != GL_TEXTURE_2D) {
- _mesa_problem(ctx, "only 2-D depth textures supported at this time");
- return;
- }
-
- if (texObj->MinFilter != texObj->MagFilter) {
- _mesa_problem(ctx, "mipmapped depth textures not supported at this time");
- return;
- }
-
- /* XXX the GL_SGIX_shadow extension spec doesn't say what to do if
- * GL_TEXTURE_COMPARE_SGIX == GL_TRUE but the current texture object
- * isn't a depth texture.
- */
- if (texImage->TexFormat->BaseFormat != GL_DEPTH_COMPONENT) {
- _mesa_problem(ctx,"GL_TEXTURE_COMPARE_SGIX enabled with non-depth texture");
- return;
- }
-
- UNCLAMPED_FLOAT_TO_CHAN(ambient, tObj->ShadowAmbient);
-
- if (texObj->CompareOperator == GL_TEXTURE_LEQUAL_R_SGIX) {
- lequal = GL_TRUE;
- gequal = GL_FALSE;
- }
- else {
- lequal = GL_FALSE;
- gequal = GL_TRUE;
- }
-
- {
- GLuint i;
- for (i = 0; i < n; i++) {
- const GLint K = 3;
- GLint col, row, ii, jj, imin, imax, jmin, jmax, samples, count;
- GLfloat w;
- GLchan lum;
- COMPUTE_NEAREST_TEXEL_LOCATION(texObj->WrapS, texcoords[i][0],
- width, col);
- COMPUTE_NEAREST_TEXEL_LOCATION(texObj->WrapT, texcoords[i][1],
- height, row);
-
- imin = col - K;
- imax = col + K;
- jmin = row - K;
- jmax = row + K;
-
- if (imin < 0) imin = 0;
- if (imax >= width) imax = width - 1;
- if (jmin < 0) jmin = 0;
- if (jmax >= height) jmax = height - 1;
-
- samples = (imax - imin + 1) * (jmax - jmin + 1);
- count = 0;
- for (jj = jmin; jj <= jmax; jj++) {
- for (ii = imin; ii <= imax; ii++) {
- GLfloat depthSample;
- texImage->FetchTexelf(texImage, ii, jj, 0, &depthSample);
- if ((depthSample <= r[i] && lequal) ||
- (depthSample >= r[i] && gequal)) {
- count++;
- }
- }
- }
-
- w = (GLfloat) count / (GLfloat) samples;
- w = CHAN_MAXF - w * (CHAN_MAXF - (GLfloat) ambient);
- lum = (GLint) w;
-
- texel[i][RCOMP] = lum;
- texel[i][GCOMP] = lum;
- texel[i][BCOMP] = lum;
- texel[i][ACOMP] = CHAN_MAX;
- }
- }
-}
-#endif
-
-
/**
* We use this function when a texture object is in an "incomplete" state.
* When a fragment program attempts to sample an incomplete texture we
diff --git a/src/mesa/swrast/s_texstore.c b/src/mesa/swrast/s_texstore.c
index 16b00b9fa1c..f9ff9ad6a42 100644
--- a/src/mesa/swrast/s_texstore.c
+++ b/src/mesa/swrast/s_texstore.c
@@ -67,7 +67,6 @@ static GLvoid *
read_color_image( GLcontext *ctx, GLint x, GLint y, GLenum type,
GLsizei width, GLsizei height )
{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
const GLint pixelSize = _mesa_bytes_per_pixel(GL_RGBA, type);
const GLint stride = width * pixelSize;
@@ -78,7 +77,7 @@ read_color_image( GLcontext *ctx, GLint x, GLint y, GLenum type,
if (!image)
return NULL;
- RENDER_START(swrast, ctx);
+ swrast_render_start(ctx);
dst = image;
for (row = 0; row < height; row++) {
@@ -86,7 +85,7 @@ read_color_image( GLcontext *ctx, GLint x, GLint y, GLenum type,
dst += stride;
}
- RENDER_FINISH(swrast, ctx);
+ swrast_render_finish(ctx);
return image;
}
@@ -101,7 +100,6 @@ read_depth_image( GLcontext *ctx, GLint x, GLint y,
GLsizei width, GLsizei height )
{
struct gl_renderbuffer *rb = ctx->ReadBuffer->_DepthBuffer;
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLuint *image, *dst;
GLint i;
@@ -109,7 +107,7 @@ read_depth_image( GLcontext *ctx, GLint x, GLint y,
if (!image)
return NULL;
- RENDER_START(swrast, ctx);
+ swrast_render_start(ctx);
dst = image;
for (i = 0; i < height; i++) {
@@ -117,7 +115,7 @@ read_depth_image( GLcontext *ctx, GLint x, GLint y,
dst += width;
}
- RENDER_FINISH(swrast, ctx);
+ swrast_render_finish(ctx);
return image;
}
@@ -132,7 +130,6 @@ read_depth_stencil_image(GLcontext *ctx, GLint x, GLint y,
{
struct gl_renderbuffer *depthRb = ctx->ReadBuffer->_DepthBuffer;
struct gl_renderbuffer *stencilRb = ctx->ReadBuffer->_StencilBuffer;
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLuint *image, *dst;
GLint i;
@@ -143,7 +140,7 @@ read_depth_stencil_image(GLcontext *ctx, GLint x, GLint y,
if (!image)
return NULL;
- RENDER_START(swrast, ctx);
+ swrast_render_start(ctx);
/* read from depth buffer */
dst = image;
@@ -205,7 +202,7 @@ read_depth_stencil_image(GLcontext *ctx, GLint x, GLint y,
dst += width;
}
- RENDER_FINISH(swrast, ctx);
+ swrast_render_finish(ctx);
return image;
}
diff --git a/src/mesa/swrast/s_triangle.c b/src/mesa/swrast/s_triangle.c
index 2033ab55291..0598052f50c 100644
--- a/src/mesa/swrast/s_triangle.c
+++ b/src/mesa/swrast/s_triangle.c
@@ -1,6 +1,6 @@
/*
* Mesa 3-D graphics library
- * Version: 6.5.3
+ * Version: 7.3
*
* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
*
@@ -35,6 +35,7 @@
#include "main/imports.h"
#include "main/macros.h"
#include "main/texformat.h"
+#include "shader/prog_instruction.h"
#include "s_aatriangle.h"
#include "s_context.h"
@@ -263,6 +264,7 @@ affine_span(GLcontext *ctx, SWspan *span,
struct affine_info *info)
{
GLchan sample[4]; /* the filtered texture sample */
+ const GLuint texEnableSave = ctx->Texture._EnabledUnits;
/* Instead of defining a function for each mode, a test is done
* between the outer and inner loops. This is to reduce code size
@@ -392,6 +394,9 @@ affine_span(GLcontext *ctx, SWspan *span,
GLuint i;
GLchan *dest = span->array->rgba[0];
+ /* Disable tex units so they're not re-applied in swrast_write_rgba_span */
+ ctx->Texture._EnabledUnits = 0x0;
+
span->intTex[0] -= FIXED_HALF;
span->intTex[1] -= FIXED_HALF;
switch (info->filter) {
@@ -493,8 +498,12 @@ affine_span(GLcontext *ctx, SWspan *span,
}
span->interpMask &= ~SPAN_RGBA;
ASSERT(span->arrayMask & SPAN_RGBA);
+
_swrast_write_rgba_span(ctx, span);
+ /* re-enable texture units */
+ ctx->Texture._EnabledUnits = texEnableSave;
+
#undef SPAN_NEAREST
#undef SPAN_LINEAR
}
@@ -1055,6 +1064,7 @@ _swrast_choose_triangle( GLcontext *ctx )
&& ctx->Texture.Unit[0]._ReallyEnabled == TEXTURE_2D_BIT
&& texObj2D->WrapS == GL_REPEAT
&& texObj2D->WrapT == GL_REPEAT
+ && texObj2D->_Swizzle == SWIZZLE_NOOP
&& texImg->_IsPowerOfTwo
&& texImg->Border == 0
&& texImg->Width == texImg->RowStride
@@ -1062,7 +1072,8 @@ _swrast_choose_triangle( GLcontext *ctx )
&& minFilter == magFilter
&& ctx->Light.Model.ColorControl == GL_SINGLE_COLOR
&& !swrast->_FogEnabled
- && ctx->Texture.Unit[0].EnvMode != GL_COMBINE_EXT) {
+ && ctx->Texture.Unit[0].EnvMode != GL_COMBINE_EXT
+ && ctx->Texture.Unit[0].EnvMode != GL_COMBINE4_NV) {
if (ctx->Hint.PerspectiveCorrection==GL_FASTEST) {
if (minFilter == GL_NEAREST
&& format == MESA_FORMAT_RGB
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 10:18:54 +0000