/**************************************************************************
*
- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright 2007 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
/*
* Authors:
- * Keith Whitwell <keith@tungstengraphics.com>
+ * Keith Whitwell <keithw@vmware.com>
* Brian Paul
*/
+#include "main/context.h"
#include "main/macros.h"
#include "main/mtypes.h"
#include "main/samplerobj.h"
+#include "main/teximage.h"
+#include "main/texobj.h"
#include "program/prog_instruction.h"
#include "st_context.h"
#include "st_atom.h"
+#include "st_sampler_view.h"
#include "st_texture.h"
#include "st_format.h"
#include "st_cb_texture.h"
#include "pipe/p_context.h"
-#include "util/u_format.h"
+#include "util/format/u_format.h"
#include "util/u_inlines.h"
#include "cso_cache/cso_context.h"
/**
- * Combine depth texture mode with "swizzle" so that depth mode swizzling
- * takes place before texture swizzling, and return the resulting swizzle.
- * If the format is not a depth format, return "swizzle" unchanged.
- *
- * \param format PIPE_FORMAT_*.
- * \param swizzle Texture swizzle, a bitmask computed using MAKE_SWIZZLE4.
- * \param depthmode One of GL_LUMINANCE, GL_INTENSITY, GL_ALPHA, GL_RED.
+ * Get a pipe_sampler_view object from a texture unit.
*/
-static GLuint
-apply_depthmode(enum pipe_format format, GLuint swizzle, GLenum depthmode)
+void
+st_update_single_texture(struct st_context *st,
+ struct pipe_sampler_view **sampler_view,
+ GLuint texUnit, bool glsl130_or_later,
+ bool ignore_srgb_decode)
{
- const struct util_format_description *desc =
- util_format_description(format);
- unsigned char swiz[4];
- unsigned i;
-
- if (desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS ||
- desc->swizzle[0] == UTIL_FORMAT_SWIZZLE_NONE) {
- /* Not a depth format. */
- return swizzle;
- }
-
- for (i = 0; i < 4; i++)
- swiz[i] = GET_SWZ(swizzle, i);
-
- switch (depthmode) {
- case GL_LUMINANCE:
- /* Rewrite reads from W to ONE, and reads from XYZ to XXX. */
- for (i = 0; i < 4; i++)
- if (swiz[i] == SWIZZLE_W)
- swiz[i] = SWIZZLE_ONE;
- else if (swiz[i] < SWIZZLE_W)
- swiz[i] = SWIZZLE_X;
- break;
-
- case GL_INTENSITY:
- /* Rewrite reads from XYZW to XXXX. */
- for (i = 0; i < 4; i++)
- if (swiz[i] <= SWIZZLE_W)
- swiz[i] = SWIZZLE_X;
- break;
-
- case GL_ALPHA:
- /* Rewrite reads from W to X, and reads from XYZ to 000. */
- for (i = 0; i < 4; i++)
- if (swiz[i] == SWIZZLE_W)
- swiz[i] = SWIZZLE_X;
- else if (swiz[i] < SWIZZLE_W)
- swiz[i] = SWIZZLE_ZERO;
- break;
- case GL_RED:
- /* Rewrite reads W to 1, XYZ to X00 */
- for (i = 0; i < 4; i++)
- if (swiz[i] == SWIZZLE_W)
- swiz[i] = SWIZZLE_ONE;
- else if (swiz[i] == SWIZZLE_Y || swiz[i] == SWIZZLE_Z)
- swiz[i] = SWIZZLE_ZERO;
- break;
- }
-
- return MAKE_SWIZZLE4(swiz[0], swiz[1], swiz[2], swiz[3]);
-}
-
-
-/**
- * Return TRUE if the swizzling described by "swizzle" and
- * "depthmode" (for depth textures only) is different from the swizzling
- * set in the given sampler view.
- *
- * \param sv A sampler view.
- * \param swizzle Texture swizzle, a bitmask computed using MAKE_SWIZZLE4.
- * \param depthmode One of GL_LUMINANCE, GL_INTENSITY, GL_ALPHA.
- */
-static boolean
-check_sampler_swizzle(struct pipe_sampler_view *sv,
- GLuint swizzle, GLenum depthmode)
-{
- swizzle = apply_depthmode(sv->texture->format, swizzle, depthmode);
-
- if ((sv->swizzle_r != GET_SWZ(swizzle, 0)) ||
- (sv->swizzle_g != GET_SWZ(swizzle, 1)) ||
- (sv->swizzle_b != GET_SWZ(swizzle, 2)) ||
- (sv->swizzle_a != GET_SWZ(swizzle, 3)))
- return TRUE;
- return FALSE;
-}
-
-
-static INLINE struct pipe_sampler_view *
-st_create_texture_sampler_view_from_stobj(struct pipe_context *pipe,
- struct st_texture_object *stObj,
- const struct gl_sampler_object *samp,
- enum pipe_format format)
-{
- struct pipe_sampler_view templ;
- GLuint swizzle = apply_depthmode(stObj->pt->format,
- stObj->base._Swizzle,
- samp->DepthMode);
-
- u_sampler_view_default_template(&templ,
- stObj->pt,
- format);
- templ.u.tex.first_level = stObj->base.BaseLevel;
-
- if (swizzle != SWIZZLE_NOOP) {
- templ.swizzle_r = GET_SWZ(swizzle, 0);
- templ.swizzle_g = GET_SWZ(swizzle, 1);
- templ.swizzle_b = GET_SWZ(swizzle, 2);
- templ.swizzle_a = GET_SWZ(swizzle, 3);
- }
-
- return pipe->create_sampler_view(pipe, stObj->pt, &templ);
-}
-
-
-static INLINE struct pipe_sampler_view *
-st_get_texture_sampler_view_from_stobj(struct st_texture_object *stObj,
- struct pipe_context *pipe,
- const struct gl_sampler_object *samp,
- enum pipe_format format)
-{
- if (!stObj || !stObj->pt) {
- return NULL;
- }
-
- if (!stObj->sampler_view) {
- stObj->sampler_view =
- st_create_texture_sampler_view_from_stobj(pipe, stObj, samp, format);
- }
-
- return stObj->sampler_view;
-}
-
-
-static GLboolean
-update_single_texture(struct st_context *st,
- struct pipe_sampler_view **sampler_view,
- GLuint texUnit)
-{
- struct pipe_context *pipe = st->pipe;
struct gl_context *ctx = st->ctx;
const struct gl_sampler_object *samp;
struct gl_texture_object *texObj;
struct st_texture_object *stObj;
- enum pipe_format st_view_format;
- GLboolean retval;
samp = _mesa_get_samplerobj(ctx, texUnit);
texObj = ctx->Texture.Unit[texUnit]._Current;
+ assert(texObj);
- if (!texObj) {
- texObj = st_get_default_texture(st);
- samp = &texObj->Sampler;
- }
stObj = st_texture_object(texObj);
- retval = st_finalize_texture(ctx, st->pipe, texObj);
- if (!retval) {
- /* out of mem */
- return GL_FALSE;
+ if (unlikely(texObj->Target == GL_TEXTURE_BUFFER)) {
+ *sampler_view = st_get_buffer_sampler_view_from_stobj(st, stObj);
+ return;
}
- /* Determine the format of the texture sampler view */
- st_view_format = stObj->pt->format;
- {
- const struct st_texture_image *firstImage =
- st_texture_image(stObj->base.Image[0][stObj->base.BaseLevel]);
- const gl_format texFormat = firstImage->base.TexFormat;
- enum pipe_format firstImageFormat =
- st_mesa_format_to_pipe_format(texFormat);
-
- if ((samp->sRGBDecode == GL_SKIP_DECODE_EXT) &&
- (_mesa_get_format_color_encoding(texFormat) == GL_SRGB)) {
- /* Don't do sRGB->RGB conversion. Interpret the texture data as
- * linear values.
- */
- const gl_format linearFormat =
- _mesa_get_srgb_format_linear(texFormat);
- firstImageFormat = st_mesa_format_to_pipe_format(linearFormat);
- }
-
- if (firstImageFormat != stObj->pt->format)
- st_view_format = firstImageFormat;
+ if (!st_finalize_texture(ctx, st->pipe, texObj, 0) ||
+ !stObj->pt) {
+ /* out of mem */
+ *sampler_view = NULL;
+ return;
}
- /* if sampler view has changed dereference it */
- if (stObj->sampler_view) {
- if (check_sampler_swizzle(stObj->sampler_view,
- stObj->base._Swizzle,
- samp->DepthMode) ||
- (st_view_format != stObj->sampler_view->format) ||
- stObj->base.BaseLevel != stObj->sampler_view->u.tex.first_level) {
- pipe_sampler_view_reference(&stObj->sampler_view, NULL);
- }
- }
+ if (texObj->TargetIndex == TEXTURE_EXTERNAL_INDEX &&
+ stObj->pt->screen->resource_changed)
+ stObj->pt->screen->resource_changed(stObj->pt->screen, stObj->pt);
- *sampler_view = st_get_texture_sampler_view_from_stobj(stObj, pipe,
- samp,
- st_view_format);
- return GL_TRUE;
+ *sampler_view =
+ st_get_texture_sampler_view_from_stobj(st, stObj, samp,
+ glsl130_or_later,
+ ignore_srgb_decode);
}
+
static void
-update_vertex_textures(struct st_context *st)
+update_textures(struct st_context *st,
+ enum pipe_shader_type shader_stage,
+ const struct gl_program *prog,
+ struct pipe_sampler_view **sampler_views)
{
- const struct gl_context *ctx = st->ctx;
- struct gl_vertex_program *vprog = ctx->VertexProgram._Current;
- GLuint su;
-
- if (!vprog->Base.SamplersUsed && st->state.num_vertex_textures == 0)
+ const GLuint old_max = st->state.num_sampler_views[shader_stage];
+ GLbitfield samplers_used = prog->SamplersUsed;
+ GLbitfield texel_fetch_samplers = prog->info.textures_used_by_txf;
+ GLbitfield free_slots = ~prog->SamplersUsed;
+ GLbitfield external_samplers_used = prog->ExternalSamplersUsed;
+ GLuint unit;
+
+ if (samplers_used == 0x0 && old_max == 0)
return;
- st->state.num_vertex_textures = 0;
+ unsigned num_textures = 0;
+
+ /* prog->sh.data is NULL if it's ARB_fragment_program */
+ bool glsl130 = (prog->sh.data ? prog->sh.data->Version : 0) >= 130;
/* loop over sampler units (aka tex image units) */
- for (su = 0; su < ctx->Const.MaxTextureImageUnits; su++) {
+ for (unit = 0; samplers_used || unit < old_max;
+ unit++, samplers_used >>= 1, texel_fetch_samplers >>= 1) {
struct pipe_sampler_view *sampler_view = NULL;
- if (vprog->Base.SamplersUsed & (1 << su)) {
- GLboolean retval;
- GLuint texUnit;
- texUnit = vprog->Base.SamplerUnits[su];
+ if (samplers_used & 1) {
+ const GLuint texUnit = prog->SamplerUnits[unit];
+
+ /* The EXT_texture_sRGB_decode extension says:
+ *
+ * "The conversion of sRGB color space components to linear color
+ * space is always performed if the texel lookup function is one
+ * of the texelFetch builtin functions.
+ *
+ * Otherwise, if the texel lookup function is one of the texture
+ * builtin functions or one of the texture gather functions, the
+ * conversion of sRGB color space components to linear color space
+ * is controlled by the TEXTURE_SRGB_DECODE_EXT parameter.
+ *
+ * If the TEXTURE_SRGB_DECODE_EXT parameter is DECODE_EXT, the
+ * conversion of sRGB color space components to linear color space
+ * is performed.
+ *
+ * If the TEXTURE_SRGB_DECODE_EXT parameter is SKIP_DECODE_EXT,
+ * the value is returned without decoding. However, if the texture
+ * is also [statically] accessed with a texelFetch function, then
+ * the result of texture builtin functions and/or texture gather
+ * functions may be returned with decoding or without decoding."
+ *
+ * Note: the "statically" will be added to the language per
+ * https://cvs.khronos.org/bugzilla/show_bug.cgi?id=14934
+ *
+ * So we simply ignore the setting entirely for samplers that are
+ * (statically) accessed with a texelFetch function.
+ */
+ st_update_single_texture(st, &sampler_view, texUnit, glsl130,
+ texel_fetch_samplers & 1);
+ num_textures = unit + 1;
+ }
- retval = update_single_texture(st, &sampler_view, texUnit);
- if (retval == GL_FALSE)
- continue;
+ pipe_sampler_view_reference(&(sampler_views[unit]), sampler_view);
+ }
- st->state.num_vertex_textures = su + 1;
+ /* For any external samplers with multiplaner YUV, stuff the additional
+ * sampler views we need at the end.
+ *
+ * Trying to cache the sampler view in the stObj looks painful, so just
+ * re-create the sampler view for the extra planes each time. Main use
+ * case is video playback (ie. fps games wouldn't be using this) so I
+ * guess no point to try to optimize this feature.
+ */
+ while (unlikely(external_samplers_used)) {
+ GLuint unit = u_bit_scan(&external_samplers_used);
+ GLuint extra = 0;
+ struct st_texture_object *stObj =
+ st_get_texture_object(st->ctx, prog, unit);
+ struct pipe_sampler_view tmpl;
+
+ if (!stObj)
+ continue;
+
+ /* use original view as template: */
+ tmpl = *sampler_views[unit];
+
+ /* if resource format matches then YUV wasn't lowered */
+ if (st_get_view_format(stObj) == stObj->pt->format)
+ continue;
+
+ switch (st_get_view_format(stObj)) {
+ case PIPE_FORMAT_NV12:
+ /* we need one additional R8G8 view: */
+ tmpl.format = PIPE_FORMAT_RG88_UNORM;
+ tmpl.swizzle_g = PIPE_SWIZZLE_Y; /* tmpl from Y plane is R8 */
+ extra = u_bit_scan(&free_slots);
+ sampler_views[extra] =
+ st->pipe->create_sampler_view(st->pipe, stObj->pt->next, &tmpl);
+ break;
+ case PIPE_FORMAT_P010:
+ case PIPE_FORMAT_P016:
+ /* we need one additional R16G16 view: */
+ tmpl.format = PIPE_FORMAT_RG1616_UNORM;
+ tmpl.swizzle_g = PIPE_SWIZZLE_Y; /* tmpl from Y plane is R16 */
+ extra = u_bit_scan(&free_slots);
+ sampler_views[extra] =
+ st->pipe->create_sampler_view(st->pipe, stObj->pt->next, &tmpl);
+ break;
+ case PIPE_FORMAT_IYUV:
+ /* we need two additional R8 views: */
+ tmpl.format = PIPE_FORMAT_R8_UNORM;
+ extra = u_bit_scan(&free_slots);
+ sampler_views[extra] =
+ st->pipe->create_sampler_view(st->pipe, stObj->pt->next, &tmpl);
+ extra = u_bit_scan(&free_slots);
+ sampler_views[extra] =
+ st->pipe->create_sampler_view(st->pipe, stObj->pt->next->next, &tmpl);
+ break;
+ case PIPE_FORMAT_YUYV:
+ /* we need one additional BGRA8888 view: */
+ tmpl.format = PIPE_FORMAT_BGRA8888_UNORM;
+ tmpl.swizzle_b = PIPE_SWIZZLE_Z;
+ tmpl.swizzle_a = PIPE_SWIZZLE_W;
+ extra = u_bit_scan(&free_slots);
+ sampler_views[extra] =
+ st->pipe->create_sampler_view(st->pipe, stObj->pt->next, &tmpl);
+ break;
+ case PIPE_FORMAT_UYVY:
+ /* we need one additional RGBA8888 view: */
+ tmpl.format = PIPE_FORMAT_RGBA8888_UNORM;
+ tmpl.swizzle_b = PIPE_SWIZZLE_Z;
+ tmpl.swizzle_a = PIPE_SWIZZLE_W;
+ extra = u_bit_scan(&free_slots);
+ sampler_views[extra] =
+ st->pipe->create_sampler_view(st->pipe, stObj->pt->next, &tmpl);
+ break;
+ default:
+ break;
}
- pipe_sampler_view_reference(&st->state.sampler_vertex_views[su],
- sampler_view);
- }
- if (ctx->Const.MaxVertexTextureImageUnits > 0) {
- GLuint numUnits = MIN2(st->state.num_vertex_textures,
- ctx->Const.MaxVertexTextureImageUnits);
- cso_set_vertex_sampler_views(st->cso_context,
- numUnits,
- st->state.sampler_vertex_views);
+ num_textures = MAX2(num_textures, extra + 1);
}
-}
+ cso_set_sampler_views(st->cso_context,
+ shader_stage,
+ num_textures,
+ sampler_views);
+ st->state.num_sampler_views[shader_stage] = num_textures;
+}
+/* Same as update_textures, but don't store the views in st_context. */
static void
-update_fragment_textures(struct st_context *st)
+update_textures_local(struct st_context *st,
+ enum pipe_shader_type shader_stage,
+ const struct gl_program *prog)
{
- const struct gl_context *ctx = st->ctx;
- struct gl_fragment_program *fprog = ctx->FragmentProgram._Current;
- GLuint su;
- int old_max = st->state.num_textures;
- GLbitfield samplers_used = fprog->Base.SamplersUsed;
-
- st->state.num_textures = 0;
+ struct pipe_sampler_view *local_views[PIPE_MAX_SAMPLERS] = {0};
- /* loop over sampler units (aka tex image units) */
- for (su = 0; su < ctx->Const.MaxTextureImageUnits; su++, samplers_used >>= 1) {
- struct pipe_sampler_view *sampler_view = NULL;
+ update_textures(st, shader_stage, prog, local_views);
- if (samplers_used & 1) {
- GLboolean retval;
- GLuint texUnit;
+ unsigned num = st->state.num_sampler_views[shader_stage];
+ for (unsigned i = 0; i < num; i++)
+ pipe_sampler_view_reference(&local_views[i], NULL);
+}
- texUnit = fprog->Base.SamplerUnits[su];
+void
+st_update_vertex_textures(struct st_context *st)
+{
+ const struct gl_context *ctx = st->ctx;
- retval = update_single_texture(st, &sampler_view, texUnit);
- if (retval == GL_FALSE)
- continue;
+ if (ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits > 0) {
+ update_textures(st,
+ PIPE_SHADER_VERTEX,
+ ctx->VertexProgram._Current,
+ st->state.vert_sampler_views);
+ }
+}
- st->state.num_textures = su + 1;
- } else if (samplers_used == 0 && su >= old_max) {
- /* if we've reset all the old views and we have no more new ones */
- break;
- }
- pipe_sampler_view_reference(&st->state.sampler_views[su], sampler_view);
- }
+void
+st_update_fragment_textures(struct st_context *st)
+{
+ const struct gl_context *ctx = st->ctx;
- cso_set_fragment_sampler_views(st->cso_context,
- st->state.num_textures,
- st->state.sampler_views);
+ update_textures(st,
+ PIPE_SHADER_FRAGMENT,
+ ctx->FragmentProgram._Current,
+ st->state.frag_sampler_views);
}
-const struct st_tracked_state st_update_texture = {
- "st_update_texture", /* name */
- { /* dirty */
- _NEW_TEXTURE, /* mesa */
- ST_NEW_FRAGMENT_PROGRAM, /* st */
- },
- update_fragment_textures /* update */
-};
+void
+st_update_geometry_textures(struct st_context *st)
+{
+ const struct gl_context *ctx = st->ctx;
+
+ if (ctx->GeometryProgram._Current) {
+ update_textures_local(st, PIPE_SHADER_GEOMETRY,
+ ctx->GeometryProgram._Current);
+ }
+}
-const struct st_tracked_state st_update_vertex_texture = {
- "st_update_vertex_texture", /* name */
- { /* dirty */
- _NEW_TEXTURE, /* mesa */
- ST_NEW_VERTEX_PROGRAM, /* st */
- },
- update_vertex_textures /* update */
-};
+void
+st_update_tessctrl_textures(struct st_context *st)
+{
+ const struct gl_context *ctx = st->ctx;
+ if (ctx->TessCtrlProgram._Current) {
+ update_textures_local(st, PIPE_SHADER_TESS_CTRL,
+ ctx->TessCtrlProgram._Current);
+ }
+}
-static void
-finalize_textures(struct st_context *st)
+void
+st_update_tesseval_textures(struct st_context *st)
{
- struct gl_context *ctx = st->ctx;
- struct gl_fragment_program *fprog = ctx->FragmentProgram._Current;
- const GLboolean prev_missing_textures = st->missing_textures;
- GLuint su;
-
- st->missing_textures = GL_FALSE;
-
- for (su = 0; su < ctx->Const.MaxTextureCoordUnits; su++) {
- if (fprog->Base.SamplersUsed & (1 << su)) {
- const GLuint texUnit = fprog->Base.SamplerUnits[su];
- struct gl_texture_object *texObj
- = ctx->Texture.Unit[texUnit]._Current;
-
- if (texObj) {
- GLboolean retval;
-
- retval = st_finalize_texture(ctx, st->pipe, texObj);
- if (!retval) {
- /* out of mem */
- st->missing_textures = GL_TRUE;
- continue;
- }
- }
- }
- }
+ const struct gl_context *ctx = st->ctx;
- if (prev_missing_textures != st->missing_textures)
- st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM;
+ if (ctx->TessEvalProgram._Current) {
+ update_textures_local(st, PIPE_SHADER_TESS_EVAL,
+ ctx->TessEvalProgram._Current);
+ }
}
-const struct st_tracked_state st_finalize_textures = {
- "st_finalize_textures", /* name */
- { /* dirty */
- _NEW_TEXTURE, /* mesa */
- 0, /* st */
- },
- finalize_textures /* update */
-};
+void
+st_update_compute_textures(struct st_context *st)
+{
+ const struct gl_context *ctx = st->ctx;
+
+ if (ctx->ComputeProgram._Current) {
+ update_textures_local(st, PIPE_SHADER_COMPUTE,
+ ctx->ComputeProgram._Current);
+ }
+}
projects / mesa.git / blobdiff