* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
*/
-#include "context.h"
+#include "imports.h"
+#include "mtypes.h"
#include "version.h"
+#include "git_sha1.h"
+/**
+ * Scans 'string' to see if it ends with 'ending'.
+ */
+static GLboolean
+check_for_ending(const char *string, const char *ending)
+{
+ int len1, len2;
+
+ len1 = strlen(string);
+ len2 = strlen(ending);
+
+ if (len2 > len1) {
+ return GL_FALSE;
+ }
+
+ if (strcmp(string + (len1 - len2), ending) == 0) {
+ return GL_TRUE;
+ } else {
+ return GL_FALSE;
+ }
+}
+
+/**
+ * Returns the gl override data
+ *
+ * version > 0 indicates there is an override requested
+ * fwd_context is only valid if version > 0
+ */
+static void
+get_gl_override(int *version, GLboolean *fwd_context)
+{
+ const char *env_var = "MESA_GL_VERSION_OVERRIDE";
+ const char *version_str;
+ int major, minor, n;
+ static int override_version = -1;
+ static GLboolean fc_suffix = GL_FALSE;
+
+ if (override_version < 0) {
+ override_version = 0;
+
+ version_str = getenv(env_var);
+ if (version_str) {
+ fc_suffix = check_for_ending(version_str, "FC");
+
+ n = sscanf(version_str, "%u.%u", &major, &minor);
+ if (n != 2) {
+ fprintf(stderr, "error: invalid value for %s: %s\n", env_var, version_str);
+ override_version = 0;
+ } else {
+ override_version = major * 10 + minor;
+ if (override_version < 30 && fc_suffix) {
+ fprintf(stderr, "error: invalid value for %s: %s\n", env_var, version_str);
+ }
+ }
+ }
+ }
+
+ *version = override_version;
+ *fwd_context = fc_suffix;
+}
+
+/**
+ * Builds the MESA version string.
+ */
+static void
+create_version_string(struct gl_context *ctx, const char *prefix)
+{
+ static const int max = 100;
+
+ ctx->VersionString = malloc(max);
+ if (ctx->VersionString) {
+ _mesa_snprintf(ctx->VersionString, max,
+ "%s%u.%u%s Mesa " PACKAGE_VERSION
+#ifdef MESA_GIT_SHA1
+ " (" MESA_GIT_SHA1 ")"
+#endif
+ ,
+ prefix,
+ ctx->Version / 10, ctx->Version % 10,
+ (ctx->API == API_OPENGL_CORE) ? " (Core Profile)" : ""
+ );
+ }
+}
+
+/**
+ * Override the context's version and/or API type if the
+ * environment variable MESA_GL_VERSION_OVERRIDE is set.
+ *
+ * Example uses of MESA_GL_VERSION_OVERRIDE:
+ *
+ * 2.1: select a compatibility (non-Core) profile with GL version 2.1
+ * 3.0: select a compatibility (non-Core) profile with GL version 3.0
+ * 3.0FC: select a Core+Forward Compatible profile with GL version 3.0
+ * 3.1: select a Core profile with GL version 3.1
+ * 3.1FC: select a Core+Forward Compatible profile with GL version 3.1
+ */
+void
+_mesa_override_gl_version(struct gl_context *ctx)
+{
+ int version;
+ GLboolean fwd_context;
+
+ get_gl_override(&version, &fwd_context);
+
+ if (version > 0) {
+ ctx->Version = version;
+ if (version >= 30 && fwd_context) {
+ ctx->API = API_OPENGL_CORE;
+ ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT;
+ } else if (version >= 31) {
+ ctx->API = API_OPENGL_CORE;
+ } else {
+ ctx->API = API_OPENGL_COMPAT;
+ }
+ create_version_string(ctx, "");
+ }
+}
+/**
+ * Returns the gl override value
+ *
+ * version > 0 indicates there is an override requested
+ */
+int
+_mesa_get_gl_version_override(void)
+{
+ int version;
+ GLboolean fwd_context;
+
+ get_gl_override(&version, &fwd_context);
+
+ return version;
+}
+
+/**
+ * Override the context's GLSL version if the environment variable
+ * MESA_GLSL_VERSION_OVERRIDE is set. Valid values for
+ * MESA_GLSL_VERSION_OVERRIDE are integers, such as "130".
+ */
+void
+_mesa_override_glsl_version(struct gl_context *ctx)
+{
+ const char *env_var = "MESA_GLSL_VERSION_OVERRIDE";
+ const char *version;
+ int n;
+
+ version = getenv(env_var);
+ if (!version) {
+ return;
+ }
+
+ n = sscanf(version, "%u", &ctx->Const.GLSLVersion);
+ if (n != 1) {
+ fprintf(stderr, "error: invalid value for %s: %s\n", env_var, version);
+ return;
+ }
+}
/**
* Examine enabled GL extensions to determine GL version.
- * Return major and minor version numbers.
*/
static void
-compute_version(GLcontext *ctx)
+compute_version(struct gl_context *ctx)
{
GLuint major, minor;
- static const int max = 100;
- const GLboolean ver_1_3 = (ctx->Extensions.ARB_multisample &&
- ctx->Extensions.ARB_multitexture &&
- ctx->Extensions.ARB_texture_border_clamp &&
- ctx->Extensions.ARB_texture_compression &&
+ const GLboolean ver_1_3 = (ctx->Extensions.ARB_texture_border_clamp &&
ctx->Extensions.ARB_texture_cube_map &&
- ctx->Extensions.EXT_texture_env_add &&
ctx->Extensions.ARB_texture_env_combine &&
ctx->Extensions.ARB_texture_env_dot3);
const GLboolean ver_1_4 = (ver_1_3 &&
ctx->Extensions.ARB_depth_texture &&
ctx->Extensions.ARB_shadow &&
ctx->Extensions.ARB_texture_env_crossbar &&
- ctx->Extensions.ARB_texture_mirrored_repeat &&
- ctx->Extensions.ARB_window_pos &&
ctx->Extensions.EXT_blend_color &&
ctx->Extensions.EXT_blend_func_separate &&
ctx->Extensions.EXT_blend_minmax &&
- ctx->Extensions.EXT_blend_subtract &&
- ctx->Extensions.EXT_fog_coord &&
- ctx->Extensions.EXT_multi_draw_arrays &&
- ctx->Extensions.EXT_point_parameters &&
- ctx->Extensions.EXT_secondary_color &&
- ctx->Extensions.EXT_stencil_wrap &&
- ctx->Extensions.EXT_texture_lod_bias &&
- ctx->Extensions.SGIS_generate_mipmap);
+ ctx->Extensions.EXT_point_parameters);
const GLboolean ver_1_5 = (ver_1_4 &&
- ctx->Extensions.ARB_occlusion_query &&
- ctx->Extensions.ARB_vertex_buffer_object &&
- ctx->Extensions.EXT_shadow_funcs);
+ ctx->Extensions.ARB_occlusion_query);
const GLboolean ver_2_0 = (ver_1_5 &&
- ctx->Extensions.ARB_draw_buffers &&
ctx->Extensions.ARB_point_sprite &&
- ctx->Extensions.ARB_shader_objects &&
ctx->Extensions.ARB_vertex_shader &&
ctx->Extensions.ARB_fragment_shader &&
ctx->Extensions.ARB_texture_non_power_of_two &&
(ctx->Extensions.EXT_stencil_two_side
|| ctx->Extensions.ATI_separate_stencil));
const GLboolean ver_2_1 = (ver_2_0 &&
- ctx->Extensions.ARB_shading_language_120 &&
ctx->Extensions.EXT_pixel_buffer_object &&
ctx->Extensions.EXT_texture_sRGB);
- if (ver_2_1) {
+ const GLboolean ver_3_0 = (ver_2_1 &&
+ ctx->Const.GLSLVersion >= 130 &&
+ ctx->Const.MaxSamples >= 4 &&
+ (ctx->API == API_OPENGL_CORE ||
+ ctx->Extensions.ARB_color_buffer_float) &&
+ ctx->Extensions.ARB_depth_buffer_float &&
+ ctx->Extensions.ARB_half_float_vertex &&
+ ctx->Extensions.ARB_map_buffer_range &&
+ ctx->Extensions.ARB_shader_texture_lod &&
+ ctx->Extensions.ARB_texture_float &&
+ ctx->Extensions.ARB_texture_rg &&
+ ctx->Extensions.ARB_texture_compression_rgtc &&
+ ctx->Extensions.EXT_draw_buffers2 &&
+ ctx->Extensions.ARB_framebuffer_object &&
+ ctx->Extensions.EXT_framebuffer_sRGB &&
+ ctx->Extensions.EXT_packed_float &&
+ ctx->Extensions.EXT_texture_array &&
+ ctx->Extensions.EXT_texture_shared_exponent &&
+ ctx->Extensions.EXT_transform_feedback &&
+ ctx->Extensions.NV_conditional_render);
+ const GLboolean ver_3_1 = (ver_3_0 &&
+ ctx->Const.GLSLVersion >= 140 &&
+ ctx->Extensions.ARB_draw_instanced &&
+ ctx->Extensions.ARB_texture_buffer_object &&
+ ctx->Extensions.ARB_uniform_buffer_object &&
+ ctx->Extensions.EXT_texture_snorm &&
+ ctx->Extensions.NV_primitive_restart &&
+ ctx->Extensions.NV_texture_rectangle &&
+ ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits >= 16);
+ const GLboolean ver_3_2 = (ver_3_1 &&
+ ctx->Const.GLSLVersion >= 150 &&
+ ctx->Extensions.ARB_depth_clamp &&
+ ctx->Extensions.ARB_draw_elements_base_vertex &&
+ ctx->Extensions.ARB_fragment_coord_conventions &&
+ ctx->Extensions.EXT_provoking_vertex &&
+ ctx->Extensions.ARB_seamless_cube_map &&
+ ctx->Extensions.ARB_sync &&
+ ctx->Extensions.ARB_texture_multisample &&
+ ctx->Extensions.EXT_vertex_array_bgra);
+ const GLboolean ver_3_3 = (ver_3_2 &&
+ ctx->Const.GLSLVersion >= 330 &&
+ ctx->Extensions.ARB_blend_func_extended &&
+ ctx->Extensions.ARB_explicit_attrib_location &&
+ ctx->Extensions.ARB_instanced_arrays &&
+ ctx->Extensions.ARB_occlusion_query2 &&
+ ctx->Extensions.ARB_shader_bit_encoding &&
+ ctx->Extensions.ARB_texture_rgb10_a2ui &&
+ ctx->Extensions.ARB_timer_query &&
+ ctx->Extensions.ARB_vertex_type_2_10_10_10_rev &&
+ ctx->Extensions.EXT_texture_swizzle);
+ /* ARB_sampler_objects is always enabled in mesa */
+
+ if (ver_3_3) {
+ major = 3;
+ minor = 3;
+ }
+ else if (ver_3_2) {
+ major = 3;
+ minor = 2;
+ }
+ else if (ver_3_1) {
+ major = 3;
+ minor = 1;
+ }
+ else if (ver_3_0) {
+ major = 3;
+ minor = 0;
+ }
+ else if (ver_2_1) {
major = 2;
minor = 1;
}
minor = 2;
}
- ctx->VersionMajor = major;
- ctx->VersionMinor = minor;
- ctx->VersionString = (char *) malloc(max);
- if (ctx->VersionString) {
- _mesa_snprintf(ctx->VersionString, max,
- "%u.%u Mesa " MESA_VERSION_STRING,
- ctx->VersionMajor, ctx->VersionMinor);
- }
+ ctx->Version = major * 10 + minor;
+
+ create_version_string(ctx, "");
}
static void
-compute_version_es1(GLcontext *ctx)
+compute_version_es1(struct gl_context *ctx)
{
- static const int max = 100;
-
/* OpenGL ES 1.0 is derived from OpenGL 1.3 */
- const GLboolean ver_1_0 = (ctx->Extensions.ARB_multisample &&
- ctx->Extensions.ARB_multitexture &&
- ctx->Extensions.ARB_texture_compression &&
- ctx->Extensions.EXT_texture_env_add &&
- ctx->Extensions.ARB_texture_env_combine &&
+ const GLboolean ver_1_0 = (ctx->Extensions.ARB_texture_env_combine &&
ctx->Extensions.ARB_texture_env_dot3);
/* OpenGL ES 1.1 is derived from OpenGL 1.5 */
const GLboolean ver_1_1 = (ver_1_0 &&
- ctx->Extensions.EXT_point_parameters &&
- ctx->Extensions.SGIS_generate_mipmap &&
- ctx->Extensions.ARB_vertex_buffer_object);
+ ctx->Extensions.EXT_point_parameters);
if (ver_1_1) {
- ctx->VersionMajor = 1;
- ctx->VersionMinor = 1;
+ ctx->Version = 11;
} else if (ver_1_0) {
- ctx->VersionMajor = 1;
- ctx->VersionMinor = 0;
+ ctx->Version = 10;
} else {
_mesa_problem(ctx, "Incomplete OpenGL ES 1.0 support.");
}
- ctx->VersionString = (char *) malloc(max);
- if (ctx->VersionString) {
- _mesa_snprintf(ctx->VersionString, max,
- "OpenGL ES-CM 1.%d Mesa " MESA_VERSION_STRING,
- ctx->VersionMinor);
- }
+ create_version_string(ctx, "OpenGL ES-CM ");
}
static void
-compute_version_es2(GLcontext *ctx)
+compute_version_es2(struct gl_context *ctx)
{
- static const int max = 100;
-
/* OpenGL ES 2.0 is derived from OpenGL 2.0 */
- const GLboolean ver_2_0 = (ctx->Extensions.ARB_multisample &&
- ctx->Extensions.ARB_multitexture &&
- ctx->Extensions.ARB_texture_compression &&
- ctx->Extensions.ARB_texture_cube_map &&
- ctx->Extensions.ARB_texture_mirrored_repeat &&
+ const GLboolean ver_2_0 = (ctx->Extensions.ARB_texture_cube_map &&
ctx->Extensions.EXT_blend_color &&
ctx->Extensions.EXT_blend_func_separate &&
ctx->Extensions.EXT_blend_minmax &&
- ctx->Extensions.EXT_blend_subtract &&
- ctx->Extensions.EXT_stencil_wrap &&
- ctx->Extensions.ARB_vertex_buffer_object &&
- ctx->Extensions.ARB_shader_objects &&
ctx->Extensions.ARB_vertex_shader &&
ctx->Extensions.ARB_fragment_shader &&
ctx->Extensions.ARB_texture_non_power_of_two &&
ctx->Extensions.EXT_blend_equation_separate);
- if (ver_2_0) {
- ctx->VersionMajor = 2;
- ctx->VersionMinor = 0;
+ /* FINISHME: This list isn't quite right. */
+ const GLboolean ver_3_0 = (ctx->Extensions.ARB_half_float_vertex &&
+ ctx->Extensions.ARB_internalformat_query &&
+ ctx->Extensions.ARB_map_buffer_range &&
+ ctx->Extensions.ARB_shader_texture_lod &&
+ ctx->Extensions.ARB_texture_float &&
+ ctx->Extensions.ARB_texture_rg &&
+ ctx->Extensions.ARB_texture_compression_rgtc &&
+ ctx->Extensions.EXT_draw_buffers2 &&
+ /* ctx->Extensions.ARB_framebuffer_object && */
+ ctx->Extensions.EXT_framebuffer_sRGB &&
+ ctx->Extensions.EXT_packed_float &&
+ ctx->Extensions.EXT_texture_array &&
+ ctx->Extensions.EXT_texture_shared_exponent &&
+ ctx->Extensions.EXT_transform_feedback &&
+ ctx->Extensions.NV_conditional_render &&
+ ctx->Extensions.ARB_draw_instanced &&
+ ctx->Extensions.ARB_uniform_buffer_object &&
+ ctx->Extensions.EXT_texture_snorm &&
+ ctx->Extensions.NV_primitive_restart &&
+ ctx->Extensions.OES_depth_texture_cube_map);
+ if (ver_3_0) {
+ ctx->Version = 30;
+ } else if (ver_2_0) {
+ ctx->Version = 20;
} else {
_mesa_problem(ctx, "Incomplete OpenGL ES 2.0 support.");
}
- ctx->VersionString = (char *) malloc(max);
- if (ctx->VersionString) {
- _mesa_snprintf(ctx->VersionString, max,
- "OpenGL ES 2.0 Mesa " MESA_VERSION_STRING);
- }
+ create_version_string(ctx, "OpenGL ES ");
}
/**
- * Set the context's VersionMajor, VersionMinor, VersionString fields.
- * This should only be called once as part of context initialization.
+ * Set the context's Version and VersionString fields.
+ * This should only be called once as part of context initialization
+ * or to perform version check for GLX_ARB_create_context_profile.
*/
void
-_mesa_compute_version(GLcontext *ctx)
+_mesa_compute_version(struct gl_context *ctx)
{
+ if (ctx->Version)
+ return;
+
switch (ctx->API) {
- case API_OPENGL:
+ case API_OPENGL_COMPAT:
+ /* Disable GLSL 1.40 and later for legacy contexts.
+ * This disallows creation of the GL 3.1 compatibility context. */
+ if (ctx->Const.GLSLVersion > 130) {
+ ctx->Const.GLSLVersion = 130;
+ }
+ /* fall through */
+ case API_OPENGL_CORE:
compute_version(ctx);
break;
case API_OPENGLES:
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