bool
i915CreateContext(int api,
const struct gl_config * mesaVis,
__DRIcontext * driContextPriv,
unsigned major_version,
unsigned minor_version,
unsigned *error,
void *sharedContextPrivate)
{
struct dd_function_table functions;
struct i915_context *i915 = rzalloc(NULL, struct i915_context);
struct intel_context *intel = &i915->intel;
struct gl_context *ctx = &intel->ctx;
if (!i915) {
*error = __DRI_CTX_ERROR_NO_MEMORY;
return false;
}
i915InitVtbl(i915);
i915InitDriverFunctions(&functions);
if (!intelInitContext(intel, api, mesaVis, driContextPriv,
sharedContextPrivate, &functions)) {
*error = __DRI_CTX_ERROR_NO_MEMORY;
return false;
}
/* Now that the extension bits are known, filter against the requested API
* and version.
*/
switch (api) {
case API_OPENGL: {
const unsigned max_version =
(ctx->Extensions.ARB_fragment_shader &&
ctx->Extensions.ARB_occlusion_query) ? 20 : 15;
const unsigned req_version = major_version * 10 + minor_version;
if (req_version > max_version) {
*error = __DRI_CTX_ERROR_BAD_VERSION;
return false;
}
break;
}
case API_OPENGLES:
case API_OPENGLES2:
break;
default:
*error = __DRI_CTX_ERROR_BAD_API;
return false;
}
intel_init_texture_formats(ctx);
_math_matrix_ctr(&intel->ViewportMatrix);
/* Initialize swrast, tnl driver tables: */
intelInitSpanFuncs(ctx);
intelInitTriFuncs(ctx);
/* Install the customized pipeline: */
_tnl_destroy_pipeline(ctx);
_tnl_install_pipeline(ctx, intel_pipeline);
if (intel->no_rast)
FALLBACK(intel, INTEL_FALLBACK_USER, 1);
ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
ctx->Const.MaxTextureImageUnits = I915_TEX_UNITS;
ctx->Const.MaxTextureCoordUnits = I915_TEX_UNITS;
ctx->Const.MaxVarying = I915_TEX_UNITS;
ctx->Const.MaxCombinedTextureImageUnits =
ctx->Const.MaxVertexTextureImageUnits +
ctx->Const.MaxTextureImageUnits;
/* Advertise the full hardware capabilities. The new memory
* manager should cope much better with overload situations:
*/
ctx->Const.MaxTextureLevels = 12;
ctx->Const.Max3DTextureLevels = 9;
ctx->Const.MaxCubeTextureLevels = 12;
ctx->Const.MaxTextureRectSize = (1 << 11);
ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
ctx->Const.MaxTextureMaxAnisotropy = 4.0;
/* GL_ARB_fragment_program limits - don't think Mesa actually
* validates programs against these, and in any case one ARB
* instruction can translate to more than one HW instruction, so
* we'll still have to check and fallback each time.
*/
ctx->Const.FragmentProgram.MaxNativeTemps = I915_MAX_TEMPORARY;
ctx->Const.FragmentProgram.MaxNativeAttribs = 11; /* 8 tex, 2 color, fog */
ctx->Const.FragmentProgram.MaxNativeParameters = I915_MAX_CONSTANT;
ctx->Const.FragmentProgram.MaxNativeAluInstructions = I915_MAX_ALU_INSN;
ctx->Const.FragmentProgram.MaxNativeTexInstructions = I915_MAX_TEX_INSN;
ctx->Const.FragmentProgram.MaxNativeInstructions = (I915_MAX_ALU_INSN +
I915_MAX_TEX_INSN);
ctx->Const.FragmentProgram.MaxNativeTexIndirections =
I915_MAX_TEX_INDIRECT;
ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0; /* I don't think we have one */
ctx->Const.FragmentProgram.MaxEnvParams =
MIN2(ctx->Const.FragmentProgram.MaxNativeParameters,
ctx->Const.FragmentProgram.MaxEnvParams);
/* i915 stores all values in single-precision floats. Values aren't set
* for other program targets because software is used for those targets.
*/
ctx->Const.FragmentProgram.MediumFloat.RangeMin = 127;
ctx->Const.FragmentProgram.MediumFloat.RangeMax = 127;
ctx->Const.FragmentProgram.MediumFloat.Precision = 23;
ctx->Const.FragmentProgram.LowFloat = ctx->Const.FragmentProgram.HighFloat =
ctx->Const.FragmentProgram.MediumFloat;
ctx->Const.FragmentProgram.MediumInt.RangeMin = 24;
ctx->Const.FragmentProgram.MediumInt.RangeMax = 24;
ctx->Const.FragmentProgram.MediumInt.Precision = 0;
ctx->Const.FragmentProgram.LowInt = ctx->Const.FragmentProgram.HighInt =
ctx->Const.FragmentProgram.MediumInt;
ctx->FragmentProgram._MaintainTexEnvProgram = true;
/* FINISHME: Are there other options that should be enabled for software
* FINISHME: vertex shaders?
*/
ctx->ShaderCompilerOptions[MESA_SHADER_VERTEX].EmitCondCodes = true;
struct gl_shader_compiler_options *const fs_options =
& ctx->ShaderCompilerOptions[MESA_SHADER_FRAGMENT];
fs_options->MaxIfDepth = 0;
fs_options->EmitNoNoise = true;
fs_options->EmitNoPow = true;
fs_options->EmitNoMainReturn = true;
fs_options->EmitNoIndirectInput = true;
fs_options->EmitNoIndirectOutput = true;
fs_options->EmitNoIndirectUniform = true;
fs_options->EmitNoIndirectTemp = true;
ctx->Const.MaxDrawBuffers = 1;
_tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
36 * sizeof(GLfloat));
intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
i915InitState(i915);
/* Always enable pixel fog. Vertex fog using fog coord will conflict
* with fog code appended onto fragment program.
*/
_tnl_allow_vertex_fog(ctx, 0);
_tnl_allow_pixel_fog(ctx, 1);
return true;
}
GLboolean
i830CreateContext(const __GLcontextModes * mesaVis,
__DRIcontext * driContextPriv,
void *sharedContextPrivate)
{
struct dd_function_table functions;
struct i830_context *i830 = CALLOC_STRUCT(i830_context);
struct intel_context *intel = &i830->intel;
GLcontext *ctx = &intel->ctx;
if (!i830)
return GL_FALSE;
i830InitVtbl(i830);
i830InitDriverFunctions(&functions);
if (!intelInitContext(intel, mesaVis, driContextPriv,
sharedContextPrivate, &functions)) {
FREE(i830);
return GL_FALSE;
}
_math_matrix_ctr(&intel->ViewportMatrix);
/* Initialize swrast, tnl driver tables: */
intelInitSpanFuncs(ctx);
intelInitTriFuncs(ctx);
/* Install the customized pipeline: */
_tnl_destroy_pipeline(ctx);
_tnl_install_pipeline(ctx, intel_pipeline);
if (intel->no_rast)
FALLBACK(intel, INTEL_FALLBACK_USER, 1);
intel->ctx.Const.MaxTextureUnits = I830_TEX_UNITS;
intel->ctx.Const.MaxTextureImageUnits = I830_TEX_UNITS;
intel->ctx.Const.MaxTextureCoordUnits = I830_TEX_UNITS;
/* Advertise the full hardware capabilities. The new memory
* manager should cope much better with overload situations:
*/
ctx->Const.MaxTextureLevels = 12;
ctx->Const.Max3DTextureLevels = 9;
ctx->Const.MaxCubeTextureLevels = 11;
ctx->Const.MaxTextureRectSize = (1 << 11);
ctx->Const.MaxTextureUnits = I830_TEX_UNITS;
ctx->Const.MaxTextureMaxAnisotropy = 2.0;
ctx->Const.MaxDrawBuffers = 1;
_tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
18 * sizeof(GLfloat));
intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
i830InitState(i830);
_tnl_allow_vertex_fog(ctx, 1);
_tnl_allow_pixel_fog(ctx, 0);
return GL_TRUE;
}