r600g: use inlines for some common tex instr setup code.

[airlied: taken from Mike's patch in bug 37476]

Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c
index 4a08887d301a564207ed2e087d70c6a88e821a95..0eb776c33586ffbc8779f7904c11b19d1ba22eb8 100644 (file)
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -1745,6 +1745,22 @@ static int tgsi_dp(struct r600_shader_ctx *ctx)
        return 0;
 }
 
+static inline boolean tgsi_tex_src_requires_loading(struct r600_shader_ctx *ctx,
+                                                   unsigned index)
+{
+       struct tgsi_full_instruction *inst = &ctx->parse.FullToken.FullInstruction;
+       return  (inst->Src[index].Register.File != TGSI_FILE_TEMPORARY &&
+               inst->Src[index].Register.File != TGSI_FILE_INPUT) ||
+               ctx->src[index].neg || ctx->src[index].abs;
+}
+
+static inline unsigned tgsi_tex_get_src_gpr(struct r600_shader_ctx *ctx,
+                                       unsigned index)
+{
+       struct tgsi_full_instruction *inst = &ctx->parse.FullToken.FullInstruction;
+       return ctx->file_offset[inst->Src[index].Register.File] + inst->Src[index].Register.Index;
+}
+
 static int tgsi_tex(struct r600_shader_ctx *ctx)
 {
        static float one_point_five = 1.5f;
@@ -1756,14 +1772,11 @@ static int tgsi_tex(struct r600_shader_ctx *ctx)
        int opcode;
        /* Texture fetch instructions can only use gprs as source.
         * Also they cannot negate the source or take the absolute value */
-       const boolean src_requires_loading =
-               (inst->Src[0].Register.File != TGSI_FILE_TEMPORARY &&
-               inst->Src[0].Register.File != TGSI_FILE_INPUT) ||
-               ctx->src[0].neg || ctx->src[0].abs;
+       const boolean src_requires_loading = tgsi_tex_src_requires_loading(ctx, 0);
        boolean src_loaded = FALSE;
        unsigned sampler_src_reg = 1;
 
-       src_gpr = ctx->file_offset[inst->Src[0].Register.File] + inst->Src[0].Register.Index;
+       src_gpr = tgsi_tex_get_src_gpr(ctx, 0);
 
        if (inst->Instruction.Opcode == TGSI_OPCODE_TXD) {
                /* TGSI moves the sampler to src reg 3 for TXD */
@@ -1772,9 +1785,9 @@ static int tgsi_tex(struct r600_shader_ctx *ctx)
                /* set gradients h/v */
                memset(&tex, 0, sizeof(struct r600_bc_tex));
                tex.inst = SQ_TEX_INST_SET_GRADIENTS_H;
-               tex.sampler_id = ctx->file_offset[inst->Src[sampler_src_reg].Register.File] + inst->Src[sampler_src_reg].Register.Index;
+               tex.sampler_id = tgsi_tex_get_src_gpr(ctx, sampler_src_reg);
                tex.resource_id = tex.sampler_id + R600_MAX_CONST_BUFFERS;
-               tex.src_gpr = ctx->file_offset[inst->Src[1].Register.File] + inst->Src[1].Register.Index;
+               tex.src_gpr = tgsi_tex_get_src_gpr(ctx, 1);
                tex.src_sel_x = ctx->src[1].swizzle[0];
                tex.src_sel_y = ctx->src[1].swizzle[1];
                tex.src_sel_z = ctx->src[1].swizzle[2];
@@ -1795,9 +1808,9 @@ static int tgsi_tex(struct r600_shader_ctx *ctx)
                /* set gradients h/v */
                memset(&tex, 0, sizeof(struct r600_bc_tex));
                tex.inst = SQ_TEX_INST_SET_GRADIENTS_V;
-               tex.sampler_id = ctx->file_offset[inst->Src[sampler_src_reg].Register.File] + inst->Src[sampler_src_reg].Register.Index;
+               tex.sampler_id = tgsi_tex_get_src_gpr(ctx, sampler_src_reg);
                tex.resource_id = tex.sampler_id + R600_MAX_CONST_BUFFERS;
-               tex.src_gpr = ctx->file_offset[inst->Src[2].Register.File] + inst->Src[2].Register.Index;
+               tex.src_gpr = tgsi_tex_get_src_gpr(ctx, 2);
                tex.src_sel_x = ctx->src[2].swizzle[0];
                tex.src_sel_y = ctx->src[2].swizzle[1];
                tex.src_sel_z = ctx->src[2].swizzle[2];
@@ -2017,8 +2030,8 @@ static int tgsi_tex(struct r600_shader_ctx *ctx)
 
        memset(&tex, 0, sizeof(struct r600_bc_tex));
        tex.inst = opcode;
-       
-       tex.sampler_id = ctx->file_offset[inst->Src[sampler_src_reg].Register.File] + inst->Src[sampler_src_reg].Register.Index;
+
+       tex.sampler_id = tgsi_tex_get_src_gpr(ctx, sampler_src_reg);
        tex.resource_id = tex.sampler_id + R600_MAX_CONST_BUFFERS;
        tex.src_gpr = src_gpr;
        tex.dst_gpr = ctx->file_offset[inst->Dst[0].Register.File] + inst->Dst[0].Register.Index;