return st_nir_finish_builtin_shader(st, b.shader, name);
}
+static void *
+make_drawpix_zs_to_color_program_nir(struct st_context *st,
+ bool rgba)
+{
+ struct nir_builder b;
+ const nir_shader_compiler_options *options =
+ st->ctx->Const.ShaderCompilerOptions[MESA_SHADER_FRAGMENT].NirOptions;
+
+ nir_builder_init_simple_shader(&b, NULL, MESA_SHADER_FRAGMENT, options);
+
+ nir_variable *texcoord =
+ nir_variable_create(b.shader, nir_var_shader_in, glsl_vec_type(2),
+ "texcoord");
+ texcoord->data.location = VARYING_SLOT_TEX0;
+
+ /* Sample depth and stencil */
+ nir_ssa_def *depth = sample_via_nir(&b, texcoord, "depth", 0,
+ GLSL_TYPE_FLOAT, nir_type_float);
+ nir_ssa_def *stencil = sample_via_nir(&b, texcoord, "stencil", 1,
+ GLSL_TYPE_UINT, nir_type_uint);
+
+ /* Create the variable to store the output color */
+ nir_variable *color_out =
+ nir_variable_create(b.shader, nir_var_shader_out, glsl_vec_type(4),
+ "make_drawpix_zs_to_color_program_nirgl_FragColor");
+ color_out->data.location = FRAG_RESULT_COLOR;
+
+ nir_ssa_def *shifted_depth = nir_fmul(&b,nir_f2f64(&b, depth), nir_imm_double(&b,0xffffff));
+ nir_ssa_def *int_depth = nir_f2u32(&b,shifted_depth);
+
+ nir_ssa_def *ds[4];
+ ds[0] = nir_ubitfield_extract(&b, stencil, nir_imm_int(&b, 0), nir_imm_int(&b,8));
+ ds[1] = nir_ubitfield_extract(&b, int_depth, nir_imm_int(&b, 0), nir_imm_int(&b,8));
+ ds[2] = nir_ubitfield_extract(&b, int_depth, nir_imm_int(&b, 8), nir_imm_int(&b,8));
+ ds[3] = nir_ubitfield_extract(&b, int_depth, nir_imm_int(&b, 16), nir_imm_int(&b,8));
+
+ nir_ssa_def *ds_comp[4];
+ ds_comp[0] = nir_fsat(&b, nir_fmul_imm(&b, nir_u2f32(&b, ds[3]), 1.0/255.0));
+ ds_comp[1] = nir_fsat(&b, nir_fmul_imm(&b, nir_u2f32(&b, ds[2]), 1.0/255.0));
+ ds_comp[2] = nir_fsat(&b, nir_fmul_imm(&b, nir_u2f32(&b, ds[1]), 1.0/255.0));
+ ds_comp[3] = nir_fsat(&b, nir_fmul_imm(&b, nir_u2f32(&b, ds[0]), 1.0/255.0));
+
+ nir_ssa_def *unpacked_ds = nir_vec4(&b, ds_comp[0], ds_comp[1], ds_comp[2], ds_comp[3]);
+
+ if (rgba) {
+ nir_store_var(&b, color_out, unpacked_ds, 0xf);
+ }
+ else {
+ unsigned zyxw[4] = { 2, 1, 0, 3 };
+ nir_ssa_def *swizzled_ds= nir_swizzle(&b, unpacked_ds, zyxw, 4);
+ nir_store_var(&b, color_out, swizzled_ds, 0xf);
+ }
+
+ char name[17];
+ snprintf(name, 17, "copypixels ZStoC");
+
+ return st_nir_finish_builtin_shader(st, b.shader, name);
+}
static void *
make_drawpix_z_stencil_program_tgsi(struct st_context *st,
return cso;
}
+/**
+ * Create fragment program that does a TEX() instruction to get a Z and
+ * stencil value value, then writes to FRAG_RESULT_COLOR.
+ * Used for glCopyPixels(GL_DEPTH_STENCIL_TO_RGBA_NV / GL_DEPTH_STENCIL_TO_BGRA_NV).
+ *
+ * \return CSO of the fragment shader.
+ */
+static void *
+get_drawpix_zs_to_color_program(struct st_context *st,
+ bool rgba)
+{
+ struct pipe_screen *pscreen = st->pipe->screen;
+ void *cso;
+ GLuint shaderIndex;
+
+ if (rgba)
+ shaderIndex = 4;
+ else
+ shaderIndex = 5;
+
+ assert(shaderIndex < ARRAY_SIZE(st->drawpix.zs_shaders));
+
+ if (st->drawpix.zs_shaders[shaderIndex]) {
+ /* already have the proper shader */
+ return st->drawpix.zs_shaders[shaderIndex];
+ }
+
+ enum pipe_shader_ir preferred_ir =
+ pscreen->get_shader_param(pscreen, PIPE_SHADER_FRAGMENT,
+ PIPE_SHADER_CAP_PREFERRED_IR);
+
+ if (preferred_ir == PIPE_SHADER_IR_NIR)
+ cso = make_drawpix_zs_to_color_program_nir(st, rgba);
+ else
+ return NULL;
+
+ /* save the new shader */
+ st->drawpix.zs_shaders[shaderIndex] = cso;
+ return cso;
+}
/**
* Create a simple vertex shader that just passes through the
struct gl_pixelstore_attrib pack, unpack;
GLint readX, readY, readW, readH, drawX, drawY, drawW, drawH;
+ if (type == GL_DEPTH_STENCIL_TO_RGBA_NV || type == GL_DEPTH_STENCIL_TO_BGRA_NV)
+ return GL_FALSE;
+
if (ctx->Pixel.ZoomX == 1.0 &&
ctx->Pixel.ZoomY == 1.0 &&
(type != GL_COLOR ||
rbRead = st_renderbuffer(ctx->ReadBuffer->
Attachment[BUFFER_STENCIL].Renderbuffer);
driver_fp = get_drawpix_z_stencil_program(st, GL_FALSE, GL_TRUE);
- } else {
- assert(type == GL_DEPTH_STENCIL);
+ } else if (type == GL_DEPTH_STENCIL) {
rbRead = st_renderbuffer(ctx->ReadBuffer->
Attachment[BUFFER_DEPTH].Renderbuffer);
driver_fp = get_drawpix_z_stencil_program(st, GL_TRUE, GL_TRUE);
+ } else {
+ assert(type == GL_DEPTH_STENCIL_TO_RGBA_NV || type == GL_DEPTH_STENCIL_TO_BGRA_NV);
+ rbRead = st_renderbuffer(ctx->ReadBuffer->
+ Attachment[BUFFER_DEPTH].Renderbuffer);
+ if (type == GL_DEPTH_STENCIL_TO_RGBA_NV)
+ driver_fp = get_drawpix_zs_to_color_program(st, GL_TRUE);
+ else
+ driver_fp = get_drawpix_zs_to_color_program(st, GL_FALSE);
+ if (!driver_fp) {
+ assert(0 && "operation not supported by CopyPixels implemetation");
+ return;
+ }
}
}
/* Create a second sampler view to read stencil */
- if (type == GL_STENCIL || type == GL_DEPTH_STENCIL) {
+ if (type == GL_STENCIL || type == GL_DEPTH_STENCIL ||
+ type == GL_DEPTH_STENCIL_TO_RGBA_NV || type == GL_DEPTH_STENCIL_TO_BGRA_NV) {
write_stencil = GL_TRUE;
if (type == GL_DEPTH_STENCIL)
write_depth = GL_TRUE;
+ if (type == GL_DEPTH_STENCIL_TO_RGBA_NV || type == GL_DEPTH_STENCIL_TO_BGRA_NV) {
+ write_depth = FALSE;
+ write_stencil = FALSE;
+ }
+
enum pipe_format stencil_format =
util_format_stencil_only(pt->format);
/* we should not be doing pixel map/transfer (see above) */
projects / mesa.git / commitdiff