diff options
Diffstat (limited to 'src/gallium/drivers/r300/r300_state.c')
| -rw-r--r-- | src/gallium/drivers/r300/r300_state.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c index 93441f624e9..2e19955454d 100644 --- a/src/gallium/drivers/r300/r300_state.c +++ b/src/gallium/drivers/r300/r300_state.c @@ -88,6 +88,9 @@ static uint32_t translate_blend_factor(int blend_fact) { return 0; } +/* Create a new blend state based on the CSO blend state. + * + * This encompasses alpha blending, logic/raster ops, and blend dithering. */ static void* r300_create_blend_state(struct pipe_context* pipe, struct pipe_blend_state* state) { @@ -128,6 +131,7 @@ static void* r300_create_blend_state(struct pipe_context* pipe, return (void*)blend; } +/* Bind blend state. */ static void r300_bind_blend_state(struct pipe_context* pipe, void* state) { @@ -137,12 +141,55 @@ static void r300_bind_blend_state(struct pipe_context* pipe, r300->dirty_state |= R300_NEW_BLEND; } +/* Free blend state. */ static void r300_delete_blend_state(struct pipe_context* pipe, void* state) { FREE(state); } +/* Create a new scissor state based on the CSO scissor state. + * + * This is only for the fragment scissors. */ +static void* r300_create_scissor_state(struct pipe_context* pipe, + struct pipe_scissor_state* state) +{ + uint32_t left, top, right, bottom; + struct r300_scissor_state* scissor = CALLOC_STRUCT(r300_scissor_state); + + /* So, a bit of info. The scissors are offset by R300_SCISSORS_OFFSET in + * both directions for all values, and can only be 13 bits wide. Why? + * We may never know. */ + left = (state->minx + R300_SCISSORS_OFFSET) & 0x1fff; + top = (state->miny + R300_SCISSORS_OFFSET) & 0x1fff; + right = (state->maxx + R300_SCISSORS_OFFSET) & 0x1fff; + bottom = (state->maxy + R300_SCISSORS_OFFSET) & 0x1fff; + + scissor->scissor_top_left = (left << R300_SCISSORS_X_SHIFT) | + (top << R300_SCISSORS_Y_SHIFT); + scissor->scissor_bottom_right = (right << R300_SCISSORS_X_SHIFT) | + (bottom << R300_SCISSORS_Y_SHIFT); + + return (void*)scissor; +} + +/* Bind scissor state.*/ +static void r300_bind_scissor_state(struct pipe_context* pipe, + void* state) +{ + struct r300_context* r300 = r300_context(pipe); + + r300->scissor_state = (struct r300_scissor_state*)state; + r300->dirty_state |= R300_NEW_SCISSOR; +} + +/* Delete scissor state. */ +static void r300_delete_scissor_state(struct pipe_context* pipe, + void* state) +{ + FREE(state); +} + static void* r300_create_vs_state(struct pipe_context* pipe, struct pipe_shader_state* state) { |