From: Ville Syrjälä Date: Tue, 20 Jun 2017 19:05:04 +0000 (+0300) Subject: i915: Fix gl_Fragcoord interpolation X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=1c409fe4c144f11ce6c6a4548ac5c6ba37980058;p=mesa.git i915: Fix gl_Fragcoord interpolation gl_FragCoord contains the window coordinates so it seems to me that we should not use perspective correct interpolation for it. At least now I get similar output as i965/swrast/llvmpipe produce. This fixes dEQP-GLES2.functional.shaders.builtin_variable.fragcoord_w. dEQP-GLES2.functional.shaders.builtin_variable.fragcoord_xyz was already passing, though I'm not quite sure how it managed to do that. v2: Add definitons for the S3 "wrap shortest" bits as well (Ian) Cc: mesa-stable@lists.freedesktop.org Reviewed-by: Ian Romanick Signed-off-by: Ville Syrjälä --- diff --git a/src/mesa/drivers/dri/i915/i915_context.h b/src/mesa/drivers/dri/i915/i915_context.h index f95b531a413..4e68d1193ca 100644 --- a/src/mesa/drivers/dri/i915/i915_context.h +++ b/src/mesa/drivers/dri/i915/i915_context.h @@ -79,12 +79,13 @@ #define I915_CTXREG_STATE4 0 #define I915_CTXREG_LI 1 #define I915_CTXREG_LIS2 2 -#define I915_CTXREG_LIS4 3 -#define I915_CTXREG_LIS5 4 -#define I915_CTXREG_LIS6 5 -#define I915_CTXREG_BF_STENCIL_OPS 6 -#define I915_CTXREG_BF_STENCIL_MASKS 7 -#define I915_CTX_SETUP_SIZE 8 +#define I915_CTXREG_LIS3 3 +#define I915_CTXREG_LIS4 4 +#define I915_CTXREG_LIS5 5 +#define I915_CTXREG_LIS6 6 +#define I915_CTXREG_BF_STENCIL_OPS 7 +#define I915_CTXREG_BF_STENCIL_MASKS 8 +#define I915_CTX_SETUP_SIZE 9 #define I915_BLENDREG_IAB 0 #define I915_BLENDREG_BLENDCOLOR0 1 diff --git a/src/mesa/drivers/dri/i915/i915_fragprog.c b/src/mesa/drivers/dri/i915/i915_fragprog.c index 3657b2d8256..2e043195121 100644 --- a/src/mesa/drivers/dri/i915/i915_fragprog.c +++ b/src/mesa/drivers/dri/i915/i915_fragprog.c @@ -1238,6 +1238,7 @@ i915ValidateFragmentProgram(struct i915_context *i915) const GLbitfield64 inputsRead = p->FragProg.info.inputs_read; GLuint s4 = i915->state.Ctx[I915_CTXREG_LIS4] & ~S4_VFMT_MASK; GLuint s2 = S2_TEXCOORD_NONE; + GLuint s3 = 0; int i, offset = 0; /* Important: @@ -1301,6 +1302,7 @@ i915ValidateFragmentProgram(struct i915_context *i915) */ s2 &= ~S2_TEXCOORD_FMT(i, S2_TEXCOORD_FMT0_MASK); s2 |= S2_TEXCOORD_FMT(i, SZ_TO_HW(wpos_size)); + s3 |= S3_TEXCOORD_PERSPECTIVE_DISABLE(i); intel->wpos_offset = offset; EMIT_PAD(wpos_size); @@ -1308,6 +1310,7 @@ i915ValidateFragmentProgram(struct i915_context *i915) } if (s2 != i915->state.Ctx[I915_CTXREG_LIS2] || + s3 != i915->state.Ctx[I915_CTXREG_LIS3] || s4 != i915->state.Ctx[I915_CTXREG_LIS4]) { I915_STATECHANGE(i915, I915_UPLOAD_CTX); @@ -1326,6 +1329,7 @@ i915ValidateFragmentProgram(struct i915_context *i915) intel->vertex_size >>= 2; i915->state.Ctx[I915_CTXREG_LIS2] = s2; + i915->state.Ctx[I915_CTXREG_LIS3] = s3; i915->state.Ctx[I915_CTXREG_LIS4] = s4; assert(intel->vtbl.check_vertex_size(intel, intel->vertex_size)); diff --git a/src/mesa/drivers/dri/i915/i915_state.c b/src/mesa/drivers/dri/i915/i915_state.c index 232fc9dce19..685af046b59 100644 --- a/src/mesa/drivers/dri/i915/i915_state.c +++ b/src/mesa/drivers/dri/i915/i915_state.c @@ -925,11 +925,12 @@ i915_init_packets(struct i915_context *i915) * piece changes. */ i915->state.Ctx[I915_CTXREG_LI] = (_3DSTATE_LOAD_STATE_IMMEDIATE_1 | - I1_LOAD_S(2) | - I1_LOAD_S(4) | - I1_LOAD_S(5) | I1_LOAD_S(6) | (3)); + I1_LOAD_S(2) | I1_LOAD_S(3) | + I1_LOAD_S(4) | I1_LOAD_S(5) | + I1_LOAD_S(6) | (4)); i915->state.Ctx[I915_CTXREG_LIS2] = 0; i915->state.Ctx[I915_CTXREG_LIS4] = 0; + i915->state.Ctx[I915_CTXREG_LIS3] = 0; i915->state.Ctx[I915_CTXREG_LIS5] = 0; if (i915->intel.ctx.Visual.rgbBits == 16) diff --git a/src/mesa/drivers/dri/i915/i915_vtbl.c b/src/mesa/drivers/dri/i915/i915_vtbl.c index c41cd37bcc2..6a0a121856d 100644 --- a/src/mesa/drivers/dri/i915/i915_vtbl.c +++ b/src/mesa/drivers/dri/i915/i915_vtbl.c @@ -176,7 +176,7 @@ i915_emit_invarient_state(struct intel_context *intel) { BATCH_LOCALS; - BEGIN_BATCH(17); + BEGIN_BATCH(15); OUT_BATCH(_3DSTATE_AA_CMD | AA_LINE_ECAAR_WIDTH_ENABLE | @@ -200,11 +200,6 @@ i915_emit_invarient_state(struct intel_context *intel) CSB_TCB(3, 3) | CSB_TCB(4, 4) | CSB_TCB(5, 5) | CSB_TCB(6, 6) | CSB_TCB(7, 7)); - /* Need to initialize this to zero. - */ - OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 | I1_LOAD_S(3) | (0)); - OUT_BATCH(0); - OUT_BATCH(_3DSTATE_SCISSOR_RECT_0_CMD); OUT_BATCH(0); OUT_BATCH(0); diff --git a/src/mesa/drivers/dri/i915/intel_reg.h b/src/mesa/drivers/dri/i915/intel_reg.h index dabbd612ee0..f855b45979c 100644 --- a/src/mesa/drivers/dri/i915/intel_reg.h +++ b/src/mesa/drivers/dri/i915/intel_reg.h @@ -93,7 +93,11 @@ #define S2_TEX_COUNT_SHIFT_830 12 #define S2_VERTEX_1_WIDTH_SHIFT_830 0 #define S2_VERTEX_0_WIDTH_SHIFT_830 6 -/* S3 not interesting */ + +#define S3_TEXCOORD_WRAP_SHORTEST_TCX(unit) (1<<((unit)*4+3)) +#define S3_TEXCOORD_WRAP_SHORTEST_TCY(unit) (1<<((unit)*4+2)) +#define S3_TEXCOORD_WRAP_SHORTEST_TCZ(unit) (1<<((unit)*4+1)) +#define S3_TEXCOORD_PERSPECTIVE_DISABLE(unit) (1<<((unit)*4+0)) #define S4_POINT_WIDTH_SHIFT 23 #define S4_POINT_WIDTH_MASK (0x1ff<<23)