Transform the code from clever, obfuscated, and imperative to
straight-forward and table-driven.
CC: Ian Romanick <i...@freedesktop.org>
Signed-off-by: Chad Versace <chad.vers...@linux.intel.com>
---
src/mesa/drivers/dri/intel/intel_screen.c | 167 +++++++++++++++++-------------
1 file changed, 97 insertions(+), 70 deletions(-)
diff --git a/src/mesa/drivers/dri/intel/intel_screen.c
b/src/mesa/drivers/dri/intel/intel_screen.c
index 9bb42dd..61daea7 100644
--- a/src/mesa/drivers/dri/intel/intel_screen.c
+++ b/src/mesa/drivers/dri/intel/intel_screen.c
@@ -851,85 +851,112 @@ intel_detect_swizzling(struct intel_screen *screen)
static __DRIconfig**
intel_screen_make_configs(__DRIscreen *dri_screen)
{
- static const GLenum back_buffer_modes[] = {
- GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
+ struct config_params {
+ GLenum color_format;
+ GLenum color_type;
+ const uint8_t depth_sizes[4];
+ const uint8_t stencil_sizes[4];
+ unsigned num_depth_stencil_sizes;
+ unsigned num_back_buffer_modes;
+ unsigned num_msaa_modes;
+ bool enable_accum;
};
- GLenum fb_format[3];
- GLenum fb_type[3];
- uint8_t depth_bits[4], stencil_bits[4], msaa_samples_array[1];
- int color;
- __DRIconfig **configs = NULL;
-
- msaa_samples_array[0] = 0;
-
- fb_format[0] = GL_RGB;
- fb_type[0] = GL_UNSIGNED_SHORT_5_6_5;
-
- fb_format[1] = GL_BGR;
- fb_type[1] = GL_UNSIGNED_INT_8_8_8_8_REV;
-
- fb_format[2] = GL_BGRA;
- fb_type[2] = GL_UNSIGNED_INT_8_8_8_8_REV;
+ static const GLenum back_buffer_modes[] = {
+ GLX_SWAP_UNDEFINED_OML, GLX_NONE, GLX_SWAP_COPY_OML,
+ };
- depth_bits[0] = 0;
- stencil_bits[0] = 0;
+ static const uint8_t msaa_samples[] = {0};
- /* Generate a rich set of useful configs that do not include an
- * accumulation buffer.
+ /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
+ * buffer that has a different number of bits per pixel than the color
+ * buffer. This isn't yet supported here.
*/
- for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
- __DRIconfig **new_configs;
- int depth_factor;
-
- /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
- * buffer that has a different number of bits per pixel than the color
- * buffer. This isn't yet supported here.
+ struct config_params params[] = {
+ /* Configs without accumulation buffer. */
+ {
+ .color_format = GL_RGB,
+ .color_type = GL_UNSIGNED_SHORT_5_6_5,
+ .depth_sizes = {0, 16},
+ .stencil_sizes = {0, 0},
+ .num_depth_stencil_sizes = 2,
+ .num_back_buffer_modes = 3,
+ .num_msaa_modes = 1,
+ .enable_accum = false,
+ },
+ {
+ .color_format = GL_BGR,
+ .color_type = GL_UNSIGNED_INT_8_8_8_8_REV,
+ .depth_sizes = {0, 24},
+ .stencil_sizes = {0, 8},
+ .num_depth_stencil_sizes = 2,
+ .num_back_buffer_modes = 3,
+ .num_msaa_modes = 1,
+ .enable_accum = false,
+ },
+ {
+ .color_format = GL_BGRA,
+ .color_type = GL_UNSIGNED_INT_8_8_8_8_REV,
+ .depth_sizes = {0, 24},
+ .stencil_sizes = {0, 8},
+ .num_depth_stencil_sizes = 2,
+ .num_back_buffer_modes = 3,
+ .num_msaa_modes = 1,
+ .enable_accum = false,
+ },
+
+ /* Configs with accumulation buffer.
+ *
+ * We generate the minimum possible set of configs that include an
+ * accumulation buffer.
*/
- if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
- depth_bits[1] = 16;
- stencil_bits[1] = 0;
- } else {
- depth_bits[1] = 24;
- stencil_bits[1] = 8;
- }
-
- depth_factor = 2;
-
- new_configs = driCreateConfigs(fb_format[color], fb_type[color],
- depth_bits,
- stencil_bits,
- depth_factor,
- back_buffer_modes,
- ARRAY_SIZE(back_buffer_modes),
- msaa_samples_array,
- ARRAY_SIZE(msaa_samples_array),
- false);
- if (configs == NULL)
- configs = new_configs;
- else
- configs = driConcatConfigs(configs, new_configs);
- }
+ {
+ .color_format = GL_RGB,
+ .color_type = GL_UNSIGNED_SHORT_5_6_5,
+ .depth_sizes = {16},
+ .stencil_sizes = {0},
+ .num_depth_stencil_sizes = 1,
+ .num_back_buffer_modes = 1,
+ .num_msaa_modes = 1,
+ .enable_accum = true,
+ },
+ {
+ .color_format = GL_BGR,
+ .color_type = GL_UNSIGNED_INT_8_8_8_8_REV,
+ .depth_sizes = {24},
+ .stencil_sizes = {8},
+ .num_depth_stencil_sizes = 1,
+ .num_back_buffer_modes = 1,
+ .num_msaa_modes = 1,
+ .enable_accum = true,
+ },
+ {
+ .color_format = GL_BGRA,
+ .color_type = GL_UNSIGNED_INT_8_8_8_8_REV,
+ .depth_sizes = {24},
+ .stencil_sizes = {8},
+ .num_depth_stencil_sizes = 1,
+ .num_back_buffer_modes = 1,
+ .num_msaa_modes = 1,
+ .enable_accum = true,
+ },
+ };
- /* Generate the minimum possible set of configs that include an
- * accumulation buffer.
- */
- for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
- __DRIconfig **new_configs;
+ __DRIconfig **configs = NULL;
- if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
- depth_bits[0] = 16;
- stencil_bits[0] = 0;
- } else {
- depth_bits[0] = 24;
- stencil_bits[0] = 8;
- }
+ for (int i = 0; i < ARRAY_SIZE(params); ++i) {
+ __DRIconfig **new_configs =
+ driCreateConfigs(params[i].color_format,
+ params[i].color_type,
+ params[i].depth_sizes,
+ params[i].stencil_sizes,
+ params[i].num_depth_stencil_sizes,
+ back_buffer_modes,
+ params[i].num_back_buffer_modes,
+ msaa_samples,
+ params[i].num_msaa_modes,
+ params[i].enable_accum);
- new_configs = driCreateConfigs(fb_format[color], fb_type[color],
- depth_bits, stencil_bits, 1,
- back_buffer_modes + 1, 1,
- msaa_samples_array, 1,
- true);
if (configs == NULL)
configs = new_configs;
else
--
1.7.11.2
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