From 295f57e09a8b67da07dd96609591dc5144031a62 Mon Sep 17 00:00:00 2001 From: Timothy Arceri Date: Mon, 23 Apr 2018 13:46:15 +1000 Subject: mesa: rename api_validate.{c,h} -> draw_validate.{c,h} MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Reviewed-by: Mathias Fröhlich Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=65422 --- src/mesa/main/api_validate.c | 1442 ------------------------------------------ 1 file changed, 1442 deletions(-) delete mode 100644 src/mesa/main/api_validate.c (limited to 'src/mesa/main/api_validate.c') diff --git a/src/mesa/main/api_validate.c b/src/mesa/main/api_validate.c deleted file mode 100644 index 7b91fdff55f..00000000000 --- a/src/mesa/main/api_validate.c +++ /dev/null @@ -1,1442 +0,0 @@ -/* - * Mesa 3-D graphics library - * - * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * 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 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 -#include "glheader.h" -#include "api_validate.h" -#include "arrayobj.h" -#include "bufferobj.h" -#include "context.h" -#include "imports.h" -#include "mtypes.h" -#include "pipelineobj.h" -#include "enums.h" -#include "state.h" -#include "transformfeedback.h" -#include "uniforms.h" -#include "program/prog_print.h" - - -static bool -check_blend_func_error(struct gl_context *ctx) -{ - /* The ARB_blend_func_extended spec's ERRORS section says: - * - * "The error INVALID_OPERATION is generated by Begin or any procedure - * that implicitly calls Begin if any draw buffer has a blend function - * requiring the second color input (SRC1_COLOR, ONE_MINUS_SRC1_COLOR, - * SRC1_ALPHA or ONE_MINUS_SRC1_ALPHA), and a framebuffer is bound that - * has more than the value of MAX_DUAL_SOURCE_DRAW_BUFFERS-1 active - * color attachements." - */ - for (unsigned i = ctx->Const.MaxDualSourceDrawBuffers; - i < ctx->DrawBuffer->_NumColorDrawBuffers; - i++) { - if (ctx->Color.Blend[i]._UsesDualSrc) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "dual source blend on illegal attachment"); - return false; - } - } - - if (ctx->Color.BlendEnabled && ctx->Color._AdvancedBlendMode) { - /* The KHR_blend_equation_advanced spec says: - * - * "If any non-NONE draw buffer uses a blend equation found in table - * X.1 or X.2, the error INVALID_OPERATION is generated by Begin or - * any operation that implicitly calls Begin (such as DrawElements) - * if: - * - * * the draw buffer for color output zero selects multiple color - * buffers (e.g., FRONT_AND_BACK in the default framebuffer); or - * - * * the draw buffer for any other color output is not NONE." - */ - if (ctx->DrawBuffer->ColorDrawBuffer[0] == GL_FRONT_AND_BACK) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "advanced blending is active and draw buffer for color " - "output zero selects multiple color buffers"); - return false; - } - - for (unsigned i = 1; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++) { - if (ctx->DrawBuffer->ColorDrawBuffer[i] != GL_NONE) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "advanced blending is active with multiple color " - "draw buffers"); - return false; - } - } - - /* The KHR_blend_equation_advanced spec says: - * - * "Advanced blending equations require the use of a fragment shader - * with a matching "blend_support" layout qualifier. If the current - * blend equation is found in table X.1 or X.2, and the active - * fragment shader does not include the layout qualifier matching - * the blend equation or "blend_support_all_equations", the error - * INVALID_OPERATION is generated [...]" - */ - const struct gl_program *prog = ctx->FragmentProgram._Current; - const GLbitfield blend_support = !prog ? 0 : prog->sh.fs.BlendSupport; - - if ((blend_support & ctx->Color._AdvancedBlendMode) == 0) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "fragment shader does not allow advanced blending mode " - "(%s)", - _mesa_enum_to_string(ctx->Color.Blend[0].EquationRGB)); - } - } - - return true; -} - - -/** - * Prior to drawing anything with glBegin, glDrawArrays, etc. this function - * is called to see if it's valid to render. This involves checking that - * the current shader is valid and the framebuffer is complete. - * It also check the current pipeline object is valid if any. - * If an error is detected it'll be recorded here. - * \return GL_TRUE if OK to render, GL_FALSE if not - */ -GLboolean -_mesa_valid_to_render(struct gl_context *ctx, const char *where) -{ - /* This depends on having up to date derived state (shaders) */ - if (ctx->NewState) - _mesa_update_state(ctx); - - if (ctx->API == API_OPENGL_COMPAT) { - /* Any shader stages that are not supplied by the GLSL shader and have - * assembly shaders enabled must now be validated. - */ - if (!ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX] && - ctx->VertexProgram.Enabled && - !_mesa_arb_vertex_program_enabled(ctx)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "%s(vertex program not valid)", where); - return GL_FALSE; - } - - if (!ctx->_Shader->CurrentProgram[MESA_SHADER_FRAGMENT]) { - if (ctx->FragmentProgram.Enabled && - !_mesa_arb_fragment_program_enabled(ctx)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "%s(fragment program not valid)", where); - return GL_FALSE; - } - - /* If drawing to integer-valued color buffers, there must be an - * active fragment shader (GL_EXT_texture_integer). - */ - if (ctx->DrawBuffer && ctx->DrawBuffer->_IntegerBuffers) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "%s(integer format but no fragment shader)", where); - return GL_FALSE; - } - } - } - - /* A pipeline object is bound */ - if (ctx->_Shader->Name && !ctx->_Shader->Validated) { - if (!_mesa_validate_program_pipeline(ctx, ctx->_Shader)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glValidateProgramPipeline failed to validate the " - "pipeline"); - return GL_FALSE; - } - } - - /* If a program is active and SSO not in use, check if validation of - * samplers succeeded for the active program. */ - if (ctx->_Shader->ActiveProgram && ctx->_Shader != ctx->Pipeline.Current) { - char errMsg[100]; - if (!_mesa_sampler_uniforms_are_valid(ctx->_Shader->ActiveProgram, - errMsg, 100)) { - _mesa_error(ctx, GL_INVALID_OPERATION, "%s", errMsg); - return GL_FALSE; - } - } - - if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) { - _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT, - "%s(incomplete framebuffer)", where); - return GL_FALSE; - } - - if (!check_blend_func_error(ctx)) { - return GL_FALSE; - } - - /* From the GL_NV_fill_rectangle spec: - * - * "An INVALID_OPERATION error is generated by Begin or any Draw command if - * only one of the front and back polygon mode is FILL_RECTANGLE_NV." - */ - if ((ctx->Polygon.FrontMode == GL_FILL_RECTANGLE_NV) != - (ctx->Polygon.BackMode == GL_FILL_RECTANGLE_NV)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "GL_FILL_RECTANGLE_NV must be used as both front/back " - "polygon mode or neither"); - return GL_FALSE; - } - -#ifdef DEBUG - if (ctx->_Shader->Flags & GLSL_LOG) { - struct gl_program **prog = ctx->_Shader->CurrentProgram; - - for (unsigned i = 0; i < MESA_SHADER_STAGES; i++) { - if (prog[i] == NULL || prog[i]->_Used) - continue; - - /* This is the first time this shader is being used. - * Append shader's constants/uniforms to log file. - * - * Only log data for the program target that matches the shader - * target. It's possible to have a program bound to the vertex - * shader target that also supplied a fragment shader. If that - * program isn't also bound to the fragment shader target we don't - * want to log its fragment data. - */ - _mesa_append_uniforms_to_file(prog[i]); - } - - for (unsigned i = 0; i < MESA_SHADER_STAGES; i++) { - if (prog[i] != NULL) - prog[i]->_Used = GL_TRUE; - } - } -#endif - - return GL_TRUE; -} - - -/** - * Check if OK to draw arrays/elements. - */ -static bool -check_valid_to_render(struct gl_context *ctx, const char *function) -{ - if (!_mesa_valid_to_render(ctx, function)) { - return false; - } - - /* Section 6.3.2 from the GL 4.5: - * "Any GL command which attempts to read from, write to, or change - * the state of a buffer object may generate an INVALID_OPERATION error if - * all or part of the buffer object is mapped ... However, only commands - * which explicitly describe this error are required to do so. If an error - * is not generated, such commands will have undefined results and may - * result in GL interruption or termination." - * - * Only some buffer API functions require INVALID_OPERATION with mapped - * buffers. No other functions list such an error, thus it's not required - * to report INVALID_OPERATION for draw calls with mapped buffers. - */ - if (!ctx->Const.AllowMappedBuffersDuringExecution && - !_mesa_all_buffers_are_unmapped(ctx->Array.VAO)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "%s(vertex buffers are mapped)", function); - return false; - } - - /* Section 11.2 (Tessellation) of the ES 3.2 spec says: - * - * "An INVALID_OPERATION error is generated by any command that - * transfers vertices to the GL if the current program state has - * one but not both of a tessellation control shader and tessellation - * evaluation shader." - * - * The OpenGL spec argues that this is allowed because a tess ctrl shader - * without a tess eval shader can be used with transform feedback. - * However, glBeginTransformFeedback doesn't allow GL_PATCHES and - * therefore doesn't allow tessellation. - * - * Further investigation showed that this is indeed a spec bug and - * a tess ctrl shader without a tess eval shader shouldn't have been - * allowed, because there is no API in GL 4.0 that can make use this - * to produce something useful. - * - * Also, all vendors except one don't support a tess ctrl shader without - * a tess eval shader anyway. - */ - if (ctx->TessCtrlProgram._Current && !ctx->TessEvalProgram._Current) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "%s(tess eval shader is missing)", function); - return false; - } - - switch (ctx->API) { - case API_OPENGLES2: - /* Section 11.2 (Tessellation) of the ES 3.2 spec says: - * - * "An INVALID_OPERATION error is generated by any command that - * transfers vertices to the GL if the current program state has - * one but not both of a tessellation control shader and tessellation - * evaluation shader." - */ - if (_mesa_is_gles3(ctx) && - ctx->TessEvalProgram._Current && !ctx->TessCtrlProgram._Current) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "%s(tess ctrl shader is missing)", function); - return false; - } - break; - - case API_OPENGL_CORE: - /* Section 10.4 (Drawing Commands Using Vertex Arrays) of the OpenGL 4.5 - * Core Profile spec says: - * - * "An INVALID_OPERATION error is generated if no vertex array - * object is bound (see section 10.3.1)." - */ - if (ctx->Array.VAO == ctx->Array.DefaultVAO) { - _mesa_error(ctx, GL_INVALID_OPERATION, "%s(no VAO bound)", function); - return false; - } - break; - - case API_OPENGLES: - case API_OPENGL_COMPAT: - break; - - default: - unreachable("Invalid API value in check_valid_to_render()"); - } - - return true; -} - - -/** - * Is 'mode' a valid value for glBegin(), glDrawArrays(), glDrawElements(), - * etc? The set of legal values depends on whether geometry shaders/programs - * are supported. - * Note: This may be called during display list compilation. - */ -bool -_mesa_is_valid_prim_mode(const struct gl_context *ctx, GLenum mode) -{ - /* The overwhelmingly common case is (mode <= GL_TRIANGLE_FAN). Test that - * first and exit. You would think that a switch-statement would be the - * right approach, but at least GCC 4.7.2 generates some pretty dire code - * for the common case. - */ - if (likely(mode <= GL_TRIANGLE_FAN)) - return true; - - if (mode <= GL_POLYGON) - return (ctx->API == API_OPENGL_COMPAT); - - if (mode <= GL_TRIANGLE_STRIP_ADJACENCY) - return _mesa_has_geometry_shaders(ctx); - - if (mode == GL_PATCHES) - return _mesa_has_tessellation(ctx); - - return false; -} - - -/** - * Is 'mode' a valid value for glBegin(), glDrawArrays(), glDrawElements(), - * etc? Also, do additional checking related to transformation feedback. - * Note: this function cannot be called during glNewList(GL_COMPILE) because - * this code depends on current transform feedback state. - * Also, do additional checking related to tessellation shaders. - */ -GLboolean -_mesa_valid_prim_mode(struct gl_context *ctx, GLenum mode, const char *name) -{ - bool valid_enum = _mesa_is_valid_prim_mode(ctx, mode); - - if (!valid_enum) { - _mesa_error(ctx, GL_INVALID_ENUM, "%s(mode=%x)", name, mode); - return GL_FALSE; - } - - /* From the OpenGL 4.5 specification, section 11.3.1: - * - * The error INVALID_OPERATION is generated if Begin, or any command that - * implicitly calls Begin, is called when a geometry shader is active and: - * - * * the input primitive type of the current geometry shader is - * POINTS and is not POINTS, - * - * * the input primitive type of the current geometry shader is - * LINES and is not LINES, LINE_STRIP, or LINE_LOOP, - * - * * the input primitive type of the current geometry shader is - * TRIANGLES and is not TRIANGLES, TRIANGLE_STRIP or - * TRIANGLE_FAN, - * - * * the input primitive type of the current geometry shader is - * LINES_ADJACENCY_ARB and is not LINES_ADJACENCY_ARB or - * LINE_STRIP_ADJACENCY_ARB, or - * - * * the input primitive type of the current geometry shader is - * TRIANGLES_ADJACENCY_ARB and is not - * TRIANGLES_ADJACENCY_ARB or TRIANGLE_STRIP_ADJACENCY_ARB. - * - * The GL spec doesn't mention any interaction with tessellation, which - * is clearly a spec bug. The same rule should apply, but instead of - * the draw primitive mode, the tessellation evaluation shader primitive - * mode should be used for the checking. - */ - if (ctx->_Shader->CurrentProgram[MESA_SHADER_GEOMETRY]) { - const GLenum geom_mode = - ctx->_Shader->CurrentProgram[MESA_SHADER_GEOMETRY]-> - info.gs.input_primitive; - struct gl_program *tes = - ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_EVAL]; - GLenum mode_before_gs = mode; - - if (tes) { - if (tes->info.tess.point_mode) - mode_before_gs = GL_POINTS; - else if (tes->info.tess.primitive_mode == GL_ISOLINES) - mode_before_gs = GL_LINES; - else - /* the GL_QUADS mode generates triangles too */ - mode_before_gs = GL_TRIANGLES; - } - - switch (mode_before_gs) { - case GL_POINTS: - valid_enum = (geom_mode == GL_POINTS); - break; - case GL_LINES: - case GL_LINE_LOOP: - case GL_LINE_STRIP: - valid_enum = (geom_mode == GL_LINES); - break; - case GL_TRIANGLES: - case GL_TRIANGLE_STRIP: - case GL_TRIANGLE_FAN: - valid_enum = (geom_mode == GL_TRIANGLES); - break; - case GL_QUADS: - case GL_QUAD_STRIP: - case GL_POLYGON: - valid_enum = false; - break; - case GL_LINES_ADJACENCY: - case GL_LINE_STRIP_ADJACENCY: - valid_enum = (geom_mode == GL_LINES_ADJACENCY); - break; - case GL_TRIANGLES_ADJACENCY: - case GL_TRIANGLE_STRIP_ADJACENCY: - valid_enum = (geom_mode == GL_TRIANGLES_ADJACENCY); - break; - default: - valid_enum = false; - break; - } - if (!valid_enum) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "%s(mode=%s vs geometry shader input %s)", - name, - _mesa_lookup_prim_by_nr(mode_before_gs), - _mesa_lookup_prim_by_nr(geom_mode)); - return GL_FALSE; - } - } - - /* From the OpenGL 4.0 (Core Profile) spec (section 2.12): - * - * "Tessellation operates only on patch primitives. If tessellation is - * active, any command that transfers vertices to the GL will - * generate an INVALID_OPERATION error if the primitive mode is not - * PATCHES. - * Patch primitives are not supported by pipeline stages below the - * tessellation evaluation shader. If there is no active program - * object or the active program object does not contain a tessellation - * evaluation shader, the error INVALID_OPERATION is generated by any - * command that transfers vertices to the GL if the primitive mode is - * PATCHES." - * - */ - if (ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_EVAL] || - ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_CTRL]) { - if (mode != GL_PATCHES) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "only GL_PATCHES valid with tessellation"); - return GL_FALSE; - } - } - else { - if (mode == GL_PATCHES) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "GL_PATCHES only valid with tessellation"); - return GL_FALSE; - } - } - - /* From the GL_EXT_transform_feedback spec: - * - * "The error INVALID_OPERATION is generated if Begin, or any command - * that performs an explicit Begin, is called when: - * - * * a geometry shader is not active and does not match the - * allowed begin modes for the current transform feedback state as - * given by table X.1. - * - * * a geometry shader is active and the output primitive type of the - * geometry shader does not match the allowed begin modes for the - * current transform feedback state as given by table X.1. - * - */ - if (_mesa_is_xfb_active_and_unpaused(ctx)) { - GLboolean pass = GL_TRUE; - - if(ctx->_Shader->CurrentProgram[MESA_SHADER_GEOMETRY]) { - switch (ctx->_Shader->CurrentProgram[MESA_SHADER_GEOMETRY]-> - info.gs.output_primitive) { - case GL_POINTS: - pass = ctx->TransformFeedback.Mode == GL_POINTS; - break; - case GL_LINE_STRIP: - pass = ctx->TransformFeedback.Mode == GL_LINES; - break; - case GL_TRIANGLE_STRIP: - pass = ctx->TransformFeedback.Mode == GL_TRIANGLES; - break; - default: - pass = GL_FALSE; - } - } - else if (ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_EVAL]) { - struct gl_program *tes = - ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_EVAL]; - if (tes->info.tess.point_mode) - pass = ctx->TransformFeedback.Mode == GL_POINTS; - else if (tes->info.tess.primitive_mode == GL_ISOLINES) - pass = ctx->TransformFeedback.Mode == GL_LINES; - else - pass = ctx->TransformFeedback.Mode == GL_TRIANGLES; - } - else { - switch (mode) { - case GL_POINTS: - pass = ctx->TransformFeedback.Mode == GL_POINTS; - break; - case GL_LINES: - case GL_LINE_STRIP: - case GL_LINE_LOOP: - pass = ctx->TransformFeedback.Mode == GL_LINES; - break; - default: - pass = ctx->TransformFeedback.Mode == GL_TRIANGLES; - break; - } - } - if (!pass) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "%s(mode=%s vs transform feedback %s)", - name, - _mesa_lookup_prim_by_nr(mode), - _mesa_lookup_prim_by_nr(ctx->TransformFeedback.Mode)); - return GL_FALSE; - } - } - - /* From GL_INTEL_conservative_rasterization spec: - * - * The conservative rasterization option applies only to polygons with - * PolygonMode state set to FILL. Draw requests for polygons with different - * PolygonMode setting or for other primitive types (points/lines) generate - * INVALID_OPERATION error. - */ - if (ctx->IntelConservativeRasterization) { - GLboolean pass = GL_TRUE; - - switch (mode) { - case GL_POINTS: - case GL_LINES: - case GL_LINE_LOOP: - case GL_LINE_STRIP: - case GL_LINES_ADJACENCY: - case GL_LINE_STRIP_ADJACENCY: - pass = GL_FALSE; - break; - case GL_TRIANGLES: - case GL_TRIANGLE_STRIP: - case GL_TRIANGLE_FAN: - case GL_QUADS: - case GL_QUAD_STRIP: - case GL_POLYGON: - case GL_TRIANGLES_ADJACENCY: - case GL_TRIANGLE_STRIP_ADJACENCY: - if (ctx->Polygon.FrontMode != GL_FILL || - ctx->Polygon.BackMode != GL_FILL) - pass = GL_FALSE; - break; - default: - pass = GL_FALSE; - } - if (!pass) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "mode=%s invalid with GL_INTEL_conservative_rasterization", - _mesa_lookup_prim_by_nr(mode)); - return GL_FALSE; - } - } - - return GL_TRUE; -} - -/** - * Verify that the element type is valid. - * - * Generates \c GL_INVALID_ENUM and returns \c false if it is not. - */ -static bool -valid_elements_type(struct gl_context *ctx, GLenum type, const char *name) -{ - switch (type) { - case GL_UNSIGNED_BYTE: - case GL_UNSIGNED_SHORT: - case GL_UNSIGNED_INT: - return true; - - default: - _mesa_error(ctx, GL_INVALID_ENUM, "%s(type = %s)", name, - _mesa_enum_to_string(type)); - return false; - } -} - -static bool -validate_DrawElements_common(struct gl_context *ctx, - GLenum mode, GLsizei count, GLenum type, - const GLvoid *indices, - const char *caller) -{ - /* Section 2.14.2 (Transform Feedback Primitive Capture) of the OpenGL ES - * 3.1 spec says: - * - * The error INVALID_OPERATION is also generated by DrawElements, - * DrawElementsInstanced, and DrawRangeElements while transform feedback - * is active and not paused, regardless of mode. - * - * The OES_geometry_shader_spec says: - * - * Issues: - * - * ... - * - * (13) Does this extension change how transform feedback operates - * compared to unextended OpenGL ES 3.0 or 3.1? - * - * RESOLVED: Yes... Since we no longer require being able to predict how - * much geometry will be generated, we also lift the restriction that - * only DrawArray* commands are supported and also support the - * DrawElements* commands for transform feedback. - * - * This should also be reflected in the body of the spec, but that appears - * to have been overlooked. The body of the spec only explicitly allows - * the indirect versions. - */ - if (_mesa_is_gles3(ctx) && - !_mesa_has_OES_geometry_shader(ctx) && - _mesa_is_xfb_active_and_unpaused(ctx)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "%s(transform feedback active)", caller); - return false; - } - - if (count < 0) { - _mesa_error(ctx, GL_INVALID_VALUE, "%s(count)", caller); - return false; - } - - if (!_mesa_valid_prim_mode(ctx, mode, caller)) { - return false; - } - - if (!valid_elements_type(ctx, type, caller)) - return false; - - if (!check_valid_to_render(ctx, caller)) - return false; - - return true; -} - -/** - * Error checking for glDrawElements(). Includes parameter checking - * and VBO bounds checking. - * \return GL_TRUE if OK to render, GL_FALSE if error found - */ -GLboolean -_mesa_validate_DrawElements(struct gl_context *ctx, - GLenum mode, GLsizei count, GLenum type, - const GLvoid *indices) -{ - FLUSH_CURRENT(ctx, 0); - - return validate_DrawElements_common(ctx, mode, count, type, indices, - "glDrawElements"); -} - - -/** - * Error checking for glMultiDrawElements(). Includes parameter checking - * and VBO bounds checking. - * \return GL_TRUE if OK to render, GL_FALSE if error found - */ -GLboolean -_mesa_validate_MultiDrawElements(struct gl_context *ctx, - GLenum mode, const GLsizei *count, - GLenum type, const GLvoid * const *indices, - GLsizei primcount) -{ - GLsizei i; - - FLUSH_CURRENT(ctx, 0); - - /* - * Section 2.3.1 (Errors) of the OpenGL 4.5 (Core Profile) spec says: - * - * "If a negative number is provided where an argument of type sizei or - * sizeiptr is specified, an INVALID_VALUE error is generated." - * - * and in the same section: - * - * "In other cases, there are no side effects unless otherwise noted; - * the command which generates the error is ignored so that it has no - * effect on GL state or framebuffer contents." - * - * Hence, check both primcount and all the count[i]. - */ - if (primcount < 0) { - _mesa_error(ctx, GL_INVALID_VALUE, - "glMultiDrawElements(primcount=%d)", primcount); - return GL_FALSE; - } - - for (i = 0; i < primcount; i++) { - if (count[i] < 0) { - _mesa_error(ctx, GL_INVALID_VALUE, - "glMultiDrawElements(count)" ); - return GL_FALSE; - } - } - - if (!_mesa_valid_prim_mode(ctx, mode, "glMultiDrawElements")) { - return GL_FALSE; - } - - if (!valid_elements_type(ctx, type, "glMultiDrawElements")) - return GL_FALSE; - - if (!check_valid_to_render(ctx, "glMultiDrawElements")) - return GL_FALSE; - - /* Not using a VBO for indices, so avoid NULL pointer derefs later. - */ - if (!_mesa_is_bufferobj(ctx->Array.VAO->IndexBufferObj)) { - for (i = 0; i < primcount; i++) { - if (!indices[i]) - return GL_FALSE; - } - } - - return GL_TRUE; -} - - -/** - * Error checking for glDrawRangeElements(). Includes parameter checking - * and VBO bounds checking. - * \return GL_TRUE if OK to render, GL_FALSE if error found - */ -GLboolean -_mesa_validate_DrawRangeElements(struct gl_context *ctx, GLenum mode, - GLuint start, GLuint end, - GLsizei count, GLenum type, - const GLvoid *indices) -{ - FLUSH_CURRENT(ctx, 0); - - if (end < start) { - _mesa_error(ctx, GL_INVALID_VALUE, "glDrawRangeElements(end= 2 ? count - 1 : 0; - break; - case GL_LINE_LOOP: - num_primitives = count >= 2 ? count : 0; - break; - case GL_LINES: - num_primitives = count / 2; - break; - case GL_TRIANGLE_STRIP: - case GL_TRIANGLE_FAN: - case GL_POLYGON: - num_primitives = count >= 3 ? count - 2 : 0; - break; - case GL_TRIANGLES: - num_primitives = count / 3; - break; - case GL_QUAD_STRIP: - num_primitives = count >= 4 ? ((count / 2) - 1) * 2 : 0; - break; - case GL_QUADS: - num_primitives = (count / 4) * 2; - break; - case GL_LINES_ADJACENCY: - num_primitives = count / 4; - break; - case GL_LINE_STRIP_ADJACENCY: - num_primitives = count >= 4 ? count - 3 : 0; - break; - case GL_TRIANGLES_ADJACENCY: - num_primitives = count / 6; - break; - case GL_TRIANGLE_STRIP_ADJACENCY: - num_primitives = count >= 6 ? (count - 4) / 2 : 0; - break; - default: - assert(!"Unexpected primitive type in count_tessellated_primitives"); - num_primitives = 0; - break; - } - return num_primitives * num_instances; -} - - -static bool -validate_draw_arrays(struct gl_context *ctx, const char *func, - GLenum mode, GLsizei count, GLsizei numInstances) -{ - FLUSH_CURRENT(ctx, 0); - - if (count < 0) { - _mesa_error(ctx, GL_INVALID_VALUE, "%s(count)", func); - return false; - } - - if (!_mesa_valid_prim_mode(ctx, mode, func)) - return false; - - if (!check_valid_to_render(ctx, func)) - return false; - - if (need_xfb_remaining_prims_check(ctx)) { - struct gl_transform_feedback_object *xfb_obj - = ctx->TransformFeedback.CurrentObject; - size_t prim_count = count_tessellated_primitives(mode, count, numInstances); - if (xfb_obj->GlesRemainingPrims < prim_count) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "%s(exceeds transform feedback size)", func); - return false; - } - xfb_obj->GlesRemainingPrims -= prim_count; - } - - if (count == 0) - return false; - - return true; -} - -/** - * Called from the tnl module to error check the function parameters and - * verify that we really can draw something. - * \return GL_TRUE if OK to render, GL_FALSE if error found - */ -GLboolean -_mesa_validate_DrawArrays(struct gl_context *ctx, GLenum mode, GLsizei count) -{ - return validate_draw_arrays(ctx, "glDrawArrays", mode, count, 1); -} - - -GLboolean -_mesa_validate_DrawArraysInstanced(struct gl_context *ctx, GLenum mode, GLint first, - GLsizei count, GLsizei numInstances) -{ - if (first < 0) { - _mesa_error(ctx, GL_INVALID_VALUE, - "glDrawArraysInstanced(start=%d)", first); - return GL_FALSE; - } - - if (numInstances <= 0) { - if (numInstances < 0) - _mesa_error(ctx, GL_INVALID_VALUE, - "glDrawArraysInstanced(numInstances=%d)", numInstances); - return GL_FALSE; - } - - return validate_draw_arrays(ctx, "glDrawArraysInstanced", mode, count, 1); -} - - -/** - * Called to error check the function parameters. - * - * Note that glMultiDrawArrays is not part of GLES, so there's limited scope - * for sharing code with the validation of glDrawArrays. - */ -bool -_mesa_validate_MultiDrawArrays(struct gl_context *ctx, GLenum mode, - const GLsizei *count, GLsizei primcount) -{ - int i; - - FLUSH_CURRENT(ctx, 0); - - if (!_mesa_valid_prim_mode(ctx, mode, "glMultiDrawArrays")) - return false; - - if (!check_valid_to_render(ctx, "glMultiDrawArrays")) - return false; - - if (primcount < 0) { - _mesa_error(ctx, GL_INVALID_VALUE, "glMultiDrawArrays(primcount=%d)", - primcount); - return false; - } - - for (i = 0; i < primcount; ++i) { - if (count[i] < 0) { - _mesa_error(ctx, GL_INVALID_VALUE, "glMultiDrawArrays(count[%d]=%d)", - i, count[i]); - return false; - } - } - - if (need_xfb_remaining_prims_check(ctx)) { - struct gl_transform_feedback_object *xfb_obj - = ctx->TransformFeedback.CurrentObject; - size_t xfb_prim_count = 0; - - for (i = 0; i < primcount; ++i) - xfb_prim_count += count_tessellated_primitives(mode, count[i], 1); - - if (xfb_obj->GlesRemainingPrims < xfb_prim_count) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glMultiDrawArrays(exceeds transform feedback size)"); - return false; - } - xfb_obj->GlesRemainingPrims -= xfb_prim_count; - } - - return true; -} - - -GLboolean -_mesa_validate_DrawElementsInstanced(struct gl_context *ctx, - GLenum mode, GLsizei count, GLenum type, - const GLvoid *indices, GLsizei numInstances) -{ - FLUSH_CURRENT(ctx, 0); - - if (numInstances < 0) { - _mesa_error(ctx, GL_INVALID_VALUE, - "glDrawElementsInstanced(numInstances=%d)", numInstances); - return GL_FALSE; - } - - return validate_DrawElements_common(ctx, mode, count, type, indices, - "glDrawElementsInstanced") - && (numInstances > 0); -} - - -GLboolean -_mesa_validate_DrawTransformFeedback(struct gl_context *ctx, - GLenum mode, - struct gl_transform_feedback_object *obj, - GLuint stream, - GLsizei numInstances) -{ - FLUSH_CURRENT(ctx, 0); - - if (!_mesa_valid_prim_mode(ctx, mode, "glDrawTransformFeedback*(mode)")) { - return GL_FALSE; - } - - if (!obj) { - _mesa_error(ctx, GL_INVALID_VALUE, "glDrawTransformFeedback*(name)"); - return GL_FALSE; - } - - /* From the GL 4.5 specification, page 429: - * "An INVALID_VALUE error is generated if id is not the name of a - * transform feedback object." - */ - if (!obj->EverBound) { - _mesa_error(ctx, GL_INVALID_VALUE, "glDrawTransformFeedback*(name)"); - return GL_FALSE; - } - - if (stream >= ctx->Const.MaxVertexStreams) { - _mesa_error(ctx, GL_INVALID_VALUE, - "glDrawTransformFeedbackStream*(index>=MaxVertexStream)"); - return GL_FALSE; - } - - if (!obj->EndedAnytime) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glDrawTransformFeedback*"); - return GL_FALSE; - } - - if (numInstances <= 0) { - if (numInstances < 0) - _mesa_error(ctx, GL_INVALID_VALUE, - "glDrawTransformFeedback*Instanced(numInstances=%d)", - numInstances); - return GL_FALSE; - } - - if (!check_valid_to_render(ctx, "glDrawTransformFeedback*")) { - return GL_FALSE; - } - - return GL_TRUE; -} - -static GLboolean -valid_draw_indirect(struct gl_context *ctx, - GLenum mode, const GLvoid *indirect, - GLsizei size, const char *name) -{ - const uint64_t end = (uint64_t) (uintptr_t) indirect + size; - - /* OpenGL ES 3.1 spec. section 10.5: - * - * "DrawArraysIndirect requires that all data sourced for the - * command, including the DrawArraysIndirectCommand - * structure, be in buffer objects, and may not be called when - * the default vertex array object is bound." - */ - if (ctx->Array.VAO == ctx->Array.DefaultVAO) { - _mesa_error(ctx, GL_INVALID_OPERATION, "(no VAO bound)"); - return GL_FALSE; - } - - /* From OpenGL ES 3.1 spec. section 10.5: - * "An INVALID_OPERATION error is generated if zero is bound to - * VERTEX_ARRAY_BINDING, DRAW_INDIRECT_BUFFER or to any enabled - * vertex array." - * - * Here we check that for each enabled vertex array we have a vertex - * buffer bound. - */ - if (_mesa_is_gles31(ctx) && - ctx->Array.VAO->_Enabled & ~ctx->Array.VAO->VertexAttribBufferMask) { - _mesa_error(ctx, GL_INVALID_OPERATION, "%s(No VBO bound)", name); - return GL_FALSE; - } - - if (!_mesa_valid_prim_mode(ctx, mode, name)) - return GL_FALSE; - - /* OpenGL ES 3.1 specification, section 10.5: - * - * "An INVALID_OPERATION error is generated if - * transform feedback is active and not paused." - * - * The OES_geometry_shader spec says: - * - * On p. 250 in the errors section for the DrawArraysIndirect command, - * and on p. 254 in the errors section for the DrawElementsIndirect - * command, delete the errors which state: - * - * "An INVALID_OPERATION error is generated if transform feedback is - * active and not paused." - * - * (thus allowing transform feedback to work with indirect draw commands). - */ - if (_mesa_is_gles31(ctx) && !ctx->Extensions.OES_geometry_shader && - _mesa_is_xfb_active_and_unpaused(ctx)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "%s(TransformFeedback is active and not paused)", name); - } - - /* From OpenGL version 4.4. section 10.5 - * and OpenGL ES 3.1, section 10.6: - * - * "An INVALID_VALUE error is generated if indirect is not a - * multiple of the size, in basic machine units, of uint." - */ - if ((GLsizeiptr)indirect & (sizeof(GLuint) - 1)) { - _mesa_error(ctx, GL_INVALID_VALUE, - "%s(indirect is not aligned)", name); - return GL_FALSE; - } - - if (!_mesa_is_bufferobj(ctx->DrawIndirectBuffer)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "%s: no buffer bound to DRAW_INDIRECT_BUFFER", name); - return GL_FALSE; - } - - if (_mesa_check_disallowed_mapping(ctx->DrawIndirectBuffer)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "%s(DRAW_INDIRECT_BUFFER is mapped)", name); - return GL_FALSE; - } - - /* From the ARB_draw_indirect specification: - * "An INVALID_OPERATION error is generated if the commands source data - * beyond the end of the buffer object [...]" - */ - if (ctx->DrawIndirectBuffer->Size < end) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "%s(DRAW_INDIRECT_BUFFER too small)", name); - return GL_FALSE; - } - - if (!check_valid_to_render(ctx, name)) - return GL_FALSE; - - return GL_TRUE; -} - -static inline GLboolean -valid_draw_indirect_elements(struct gl_context *ctx, - GLenum mode, GLenum type, const GLvoid *indirect, - GLsizeiptr size, const char *name) -{ - if (!valid_elements_type(ctx, type, name)) - return GL_FALSE; - - /* - * Unlike regular DrawElementsInstancedBaseVertex commands, the indices - * may not come from a client array and must come from an index buffer. - * If no element array buffer is bound, an INVALID_OPERATION error is - * generated. - */ - if (!_mesa_is_bufferobj(ctx->Array.VAO->IndexBufferObj)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "%s(no buffer bound to GL_ELEMENT_ARRAY_BUFFER)", name); - return GL_FALSE; - } - - return valid_draw_indirect(ctx, mode, indirect, size, name); -} - -static inline GLboolean -valid_draw_indirect_multi(struct gl_context *ctx, - GLsizei primcount, GLsizei stride, - const char *name) -{ - - /* From the ARB_multi_draw_indirect specification: - * "INVALID_VALUE is generated by MultiDrawArraysIndirect or - * MultiDrawElementsIndirect if is negative." - * - * " must be positive, otherwise an INVALID_VALUE error will - * be generated." - */ - if (primcount < 0) { - _mesa_error(ctx, GL_INVALID_VALUE, "%s(primcount < 0)", name); - return GL_FALSE; - } - - - /* From the ARB_multi_draw_indirect specification: - * " must be a multiple of four, otherwise an INVALID_VALUE - * error is generated." - */ - if (stride % 4) { - _mesa_error(ctx, GL_INVALID_VALUE, "%s(stride %% 4)", name); - return GL_FALSE; - } - - return GL_TRUE; -} - -GLboolean -_mesa_validate_DrawArraysIndirect(struct gl_context *ctx, - GLenum mode, - const GLvoid *indirect) -{ - const unsigned drawArraysNumParams = 4; - - FLUSH_CURRENT(ctx, 0); - - return valid_draw_indirect(ctx, mode, - indirect, drawArraysNumParams * sizeof(GLuint), - "glDrawArraysIndirect"); -} - -GLboolean -_mesa_validate_DrawElementsIndirect(struct gl_context *ctx, - GLenum mode, GLenum type, - const GLvoid *indirect) -{ - const unsigned drawElementsNumParams = 5; - - FLUSH_CURRENT(ctx, 0); - - return valid_draw_indirect_elements(ctx, mode, type, - indirect, drawElementsNumParams * sizeof(GLuint), - "glDrawElementsIndirect"); -} - -GLboolean -_mesa_validate_MultiDrawArraysIndirect(struct gl_context *ctx, - GLenum mode, - const GLvoid *indirect, - GLsizei primcount, GLsizei stride) -{ - GLsizeiptr size = 0; - const unsigned drawArraysNumParams = 4; - - FLUSH_CURRENT(ctx, 0); - - /* caller has converted stride==0 to drawArraysNumParams * sizeof(GLuint) */ - assert(stride != 0); - - if (!valid_draw_indirect_multi(ctx, primcount, stride, - "glMultiDrawArraysIndirect")) - return GL_FALSE; - - /* number of bytes of the indirect buffer which will be read */ - size = primcount - ? (primcount - 1) * stride + drawArraysNumParams * sizeof(GLuint) - : 0; - - if (!valid_draw_indirect(ctx, mode, indirect, size, - "glMultiDrawArraysIndirect")) - return GL_FALSE; - - return GL_TRUE; -} - -GLboolean -_mesa_validate_MultiDrawElementsIndirect(struct gl_context *ctx, - GLenum mode, GLenum type, - const GLvoid *indirect, - GLsizei primcount, GLsizei stride) -{ - GLsizeiptr size = 0; - const unsigned drawElementsNumParams = 5; - - FLUSH_CURRENT(ctx, 0); - - /* caller has converted stride==0 to drawElementsNumParams * sizeof(GLuint) */ - assert(stride != 0); - - if (!valid_draw_indirect_multi(ctx, primcount, stride, - "glMultiDrawElementsIndirect")) - return GL_FALSE; - - /* number of bytes of the indirect buffer which will be read */ - size = primcount - ? (primcount - 1) * stride + drawElementsNumParams * sizeof(GLuint) - : 0; - - if (!valid_draw_indirect_elements(ctx, mode, type, - indirect, size, - "glMultiDrawElementsIndirect")) - return GL_FALSE; - - return GL_TRUE; -} - -static GLboolean -valid_draw_indirect_parameters(struct gl_context *ctx, - const char *name, - GLintptr drawcount) -{ - /* From the ARB_indirect_parameters specification: - * "INVALID_VALUE is generated by MultiDrawArraysIndirectCountARB or - * MultiDrawElementsIndirectCountARB if is not a multiple of - * four." - */ - if (drawcount & 3) { - _mesa_error(ctx, GL_INVALID_VALUE, - "%s(drawcount is not a multiple of 4)", name); - return GL_FALSE; - } - - /* From the ARB_indirect_parameters specification: - * "INVALID_OPERATION is generated by MultiDrawArraysIndirectCountARB or - * MultiDrawElementsIndirectCountARB if no buffer is bound to the - * PARAMETER_BUFFER_ARB binding point." - */ - if (!_mesa_is_bufferobj(ctx->ParameterBuffer)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "%s: no buffer bound to PARAMETER_BUFFER", name); - return GL_FALSE; - } - - if (_mesa_check_disallowed_mapping(ctx->ParameterBuffer)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "%s(PARAMETER_BUFFER is mapped)", name); - return GL_FALSE; - } - - /* From the ARB_indirect_parameters specification: - * "INVALID_OPERATION is generated by MultiDrawArraysIndirectCountARB or - * MultiDrawElementsIndirectCountARB if reading a typed value - * from the buffer bound to the PARAMETER_BUFFER_ARB target at the offset - * specified by would result in an out-of-bounds access." - */ - if (ctx->ParameterBuffer->Size < drawcount + sizeof(GLsizei)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "%s(PARAMETER_BUFFER too small)", name); - return GL_FALSE; - } - - return GL_TRUE; -} - -GLboolean -_mesa_validate_MultiDrawArraysIndirectCount(struct gl_context *ctx, - GLenum mode, - GLintptr indirect, - GLintptr drawcount, - GLsizei maxdrawcount, - GLsizei stride) -{ - GLsizeiptr size = 0; - const unsigned drawArraysNumParams = 4; - - FLUSH_CURRENT(ctx, 0); - - /* caller has converted stride==0 to drawArraysNumParams * sizeof(GLuint) */ - assert(stride != 0); - - if (!valid_draw_indirect_multi(ctx, maxdrawcount, stride, - "glMultiDrawArraysIndirectCountARB")) - return GL_FALSE; - - /* number of bytes of the indirect buffer which will be read */ - size = maxdrawcount - ? (maxdrawcount - 1) * stride + drawArraysNumParams * sizeof(GLuint) - : 0; - - if (!valid_draw_indirect(ctx, mode, (void *)indirect, size, - "glMultiDrawArraysIndirectCountARB")) - return GL_FALSE; - - return valid_draw_indirect_parameters( - ctx, "glMultiDrawArraysIndirectCountARB", drawcount); -} - -GLboolean -_mesa_validate_MultiDrawElementsIndirectCount(struct gl_context *ctx, - GLenum mode, GLenum type, - GLintptr indirect, - GLintptr drawcount, - GLsizei maxdrawcount, - GLsizei stride) -{ - GLsizeiptr size = 0; - const unsigned drawElementsNumParams = 5; - - FLUSH_CURRENT(ctx, 0); - - /* caller has converted stride==0 to drawElementsNumParams * sizeof(GLuint) */ - assert(stride != 0); - - if (!valid_draw_indirect_multi(ctx, maxdrawcount, stride, - "glMultiDrawElementsIndirectCountARB")) - return GL_FALSE; - - /* number of bytes of the indirect buffer which will be read */ - size = maxdrawcount - ? (maxdrawcount - 1) * stride + drawElementsNumParams * sizeof(GLuint) - : 0; - - if (!valid_draw_indirect_elements(ctx, mode, type, - (void *)indirect, size, - "glMultiDrawElementsIndirectCountARB")) - return GL_FALSE; - - return valid_draw_indirect_parameters( - ctx, "glMultiDrawElementsIndirectCountARB", drawcount); -} -- cgit v1.2.3