diff options
| -rw-r--r-- | src/mesa/state_tracker/st_extensions.c | 1 | ||||
| -rw-r--r-- | src/mesa/state_tracker/st_mesa_to_tgsi.c | 74 |
2 files changed, 72 insertions, 3 deletions
diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c index 31c03c0783..f2a62f9b69 100644 --- a/src/mesa/state_tracker/st_extensions.c +++ b/src/mesa/state_tracker/st_extensions.c @@ -147,6 +147,7 @@ void st_init_extensions(struct st_context *st) * Extensions that are supported by all Gallium drivers: */ ctx->Extensions.ARB_copy_buffer = GL_TRUE; + ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE; ctx->Extensions.ARB_fragment_program = GL_TRUE; ctx->Extensions.ARB_map_buffer_range = GL_TRUE; ctx->Extensions.ARB_multisample = GL_TRUE; diff --git a/src/mesa/state_tracker/st_mesa_to_tgsi.c b/src/mesa/state_tracker/st_mesa_to_tgsi.c index 05b56c9b58..4aed2df8c3 100644 --- a/src/mesa/state_tracker/st_mesa_to_tgsi.c +++ b/src/mesa/state_tracker/st_mesa_to_tgsi.c @@ -34,8 +34,10 @@ #include "pipe/p_compiler.h" #include "pipe/p_shader_tokens.h" #include "pipe/p_state.h" +#include "pipe/p_context.h" #include "tgsi/tgsi_ureg.h" #include "st_mesa_to_tgsi.h" +#include "st_context.h" #include "shader/prog_instruction.h" #include "shader/prog_parameter.h" #include "shader/prog_print.h" @@ -665,6 +667,22 @@ compile_instruction( } } +/** + * Emit the TGSI instructions to adjust the WPOS pixel center convention + */ +static void +emit_adjusted_wpos( struct st_translate *t, + const struct gl_program *program, GLfloat value) +{ + struct ureg_program *ureg = t->ureg; + struct ureg_dst wpos_temp = ureg_DECL_temporary(ureg); + struct ureg_src wpos_input = t->inputs[t->inputMapping[FRAG_ATTRIB_WPOS]]; + + ureg_ADD(ureg, ureg_writemask(wpos_temp, TGSI_WRITEMASK_X | TGSI_WRITEMASK_Y), + wpos_input, ureg_imm1f(ureg, value)); + + t->inputs[t->inputMapping[FRAG_ATTRIB_WPOS]] = ureg_src(wpos_temp); +} /** * Emit the TGSI instructions for inverting the WPOS y coordinate. @@ -690,12 +708,17 @@ emit_inverted_wpos( struct st_translate *t, winSizeState); struct ureg_src winsize = ureg_DECL_constant( ureg, winHeightConst ); - struct ureg_dst wpos_temp = ureg_DECL_temporary( ureg ); + struct ureg_dst wpos_temp; struct ureg_src wpos_input = t->inputs[t->inputMapping[FRAG_ATTRIB_WPOS]]; /* MOV wpos_temp, input[wpos] */ - ureg_MOV( ureg, wpos_temp, wpos_input ); + if (wpos_input.File == TGSI_FILE_TEMPORARY) + wpos_temp = ureg_dst(wpos_input); + else { + wpos_temp = ureg_DECL_temporary( ureg ); + ureg_MOV( ureg, wpos_temp, wpos_input ); + } /* SUB wpos_temp.y, winsize_const, wpos_input */ @@ -801,6 +824,7 @@ st_translate_mesa_program( * Declare input attributes. */ if (procType == TGSI_PROCESSOR_FRAGMENT) { + struct gl_fragment_program* fp = (struct gl_fragment_program*)program; for (i = 0; i < numInputs; i++) { t->inputs[i] = ureg_DECL_fs_input(ureg, inputSemanticName[i], @@ -812,7 +836,51 @@ st_translate_mesa_program( /* Must do this after setting up t->inputs, and before * emitting constant references, below: */ - emit_inverted_wpos( t, program ); + struct pipe_screen* pscreen = st_context(ctx)->pipe->screen; + boolean invert = FALSE; + + if (fp->OriginUpperLeft) { + if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT)) { + } + else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT)) { + ureg_property_fs_coord_origin(ureg, TGSI_FS_COORD_ORIGIN_LOWER_LEFT); + invert = TRUE; + } + else + assert(0); + } + else { + if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT)) + ureg_property_fs_coord_origin(ureg, TGSI_FS_COORD_ORIGIN_LOWER_LEFT); + else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT)) + invert = TRUE; + else + assert(0); + } + + if (fp->PixelCenterInteger) { + if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER)) + ureg_property_fs_coord_pixel_center(ureg, TGSI_FS_COORD_PIXEL_CENTER_INTEGER); + else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER)) + emit_adjusted_wpos(t, program, invert ? 0.5f : -0.5f); + else + assert(0); + } + else { + if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER)) { + } + else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER)) { + ureg_property_fs_coord_pixel_center(ureg, TGSI_FS_COORD_PIXEL_CENTER_INTEGER); + emit_adjusted_wpos(t, program, invert ? -0.5f : 0.5f); + } + else + assert(0); + } + + /* we invert after adjustment so that we avoid the MOV to temporary, + * and reuse the adjustment ADD instead */ + if (invert) + emit_inverted_wpos(t, program); } if (program->InputsRead & FRAG_BIT_FACE) { |