From 3f0f2c7f7d558a96e540bed3bfb4de835e9f40e0 Mon Sep 17 00:00:00 2001 From: Kristian Høgsberg Date: Mon, 7 Jul 2014 15:11:45 -0700 Subject: i965: Add a mechanism for sending native primitives into the driver MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The brw_draw_prims() function is the draw entry point into the driver, and takes struct _mesa_prim for input. We want to be able to feed native primitives into the driver, and to that end we introduce BRW_PRIM_OFFSET, which lets use describe geometry using the native GEN primitive types. Signed-off-by: Kristian Høgsberg Reviewed-by: Kenneth Graunke --- src/mesa/drivers/dri/i965/brw_context.h | 2 +- src/mesa/drivers/dri/i965/brw_defines.h | 7 +++++++ src/mesa/drivers/dri/i965/brw_draw.c | 15 ++++++++++++--- src/mesa/drivers/dri/i965/brw_vec4_gs.c | 3 ++- 4 files changed, 22 insertions(+), 5 deletions(-) diff --git a/src/mesa/drivers/dri/i965/brw_context.h b/src/mesa/drivers/dri/i965/brw_context.h index 48494082831..01be5fb427f 100644 --- a/src/mesa/drivers/dri/i965/brw_context.h +++ b/src/mesa/drivers/dri/i965/brw_context.h @@ -1766,7 +1766,7 @@ gen8_emit_depth_stencil_hiz(struct brw_context *brw, void gen8_hiz_exec(struct brw_context *brw, struct intel_mipmap_tree *mt, unsigned int level, unsigned int layer, enum gen6_hiz_op op); -extern const GLuint prim_to_hw_prim[GL_TRIANGLE_STRIP_ADJACENCY+1]; +uint32_t get_hw_prim_for_gl_prim(int mode); void brw_setup_vec4_key_clip_info(struct brw_context *brw, diff --git a/src/mesa/drivers/dri/i965/brw_defines.h b/src/mesa/drivers/dri/i965/brw_defines.h index 1322ed241b6..88f205785bb 100644 --- a/src/mesa/drivers/dri/i965/brw_defines.h +++ b/src/mesa/drivers/dri/i965/brw_defines.h @@ -77,6 +77,13 @@ #define _3DPRIM_LINESTRIP_CONT_BF 0x14 #define _3DPRIM_TRIFAN_NOSTIPPLE 0x15 +/* We use this offset to be able to pass native primitive types in struct + * _mesa_prim::mode. Native primitive types are BRW_PRIM_OFFSET + + * native_type, which should be different from all GL types and still fit in + * the 8 bits avialable. */ + +#define BRW_PRIM_OFFSET 0x80 + #define BRW_ANISORATIO_2 0 #define BRW_ANISORATIO_4 1 #define BRW_ANISORATIO_6 2 diff --git a/src/mesa/drivers/dri/i965/brw_draw.c b/src/mesa/drivers/dri/i965/brw_draw.c index 412c3600320..f84a2ad4f6f 100644 --- a/src/mesa/drivers/dri/i965/brw_draw.c +++ b/src/mesa/drivers/dri/i965/brw_draw.c @@ -55,7 +55,7 @@ #define FILE_DEBUG_FLAG DEBUG_PRIMS -const GLuint prim_to_hw_prim[GL_TRIANGLE_STRIP_ADJACENCY+1] = { +static const GLuint prim_to_hw_prim[GL_TRIANGLE_STRIP_ADJACENCY+1] = { _3DPRIM_POINTLIST, _3DPRIM_LINELIST, _3DPRIM_LINELOOP, @@ -86,6 +86,15 @@ static const GLenum reduced_prim[GL_POLYGON+1] = { GL_TRIANGLES }; +uint32_t +get_hw_prim_for_gl_prim(int mode) +{ + if (mode >= BRW_PRIM_OFFSET) + return mode - BRW_PRIM_OFFSET; + else + return prim_to_hw_prim[mode]; +} + /* When the primitive changes, set a state bit and re-validate. Not * the nicest and would rather deal with this by having all the @@ -96,7 +105,7 @@ static void brw_set_prim(struct brw_context *brw, const struct _mesa_prim *prim) { struct gl_context *ctx = &brw->ctx; - uint32_t hw_prim = prim_to_hw_prim[prim->mode]; + uint32_t hw_prim = get_hw_prim_for_gl_prim(prim->mode); DBG("PRIM: %s\n", _mesa_lookup_enum_by_nr(prim->mode)); @@ -133,7 +142,7 @@ static void gen6_set_prim(struct brw_context *brw, DBG("PRIM: %s\n", _mesa_lookup_enum_by_nr(prim->mode)); - hw_prim = prim_to_hw_prim[prim->mode]; + hw_prim = get_hw_prim_for_gl_prim(prim->mode); if (hw_prim != brw->primitive) { brw->primitive = hw_prim; diff --git a/src/mesa/drivers/dri/i965/brw_vec4_gs.c b/src/mesa/drivers/dri/i965/brw_vec4_gs.c index 8daa555b532..5b2ed514212 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4_gs.c +++ b/src/mesa/drivers/dri/i965/brw_vec4_gs.c @@ -217,7 +217,8 @@ do_gs_prog(struct brw_context *brw, /* URB entry sizes are stored as a multiple of 64 bytes. */ c.prog_data.base.urb_entry_size = ALIGN(output_size_bytes, 64) / 64; - c.prog_data.output_topology = prim_to_hw_prim[gp->program.OutputType]; + c.prog_data.output_topology = + get_hw_prim_for_gl_prim(gp->program.OutputType); brw_compute_vue_map(brw, &c.input_vue_map, c.key.input_varyings); -- cgit v1.2.3